Our prefabricated, double wall round grease ducts are designed and built for vertical runs and don’t require field welding or secondary insulation. Double-wall rectangular ducts and fittings. x 10 in. These two components help ensure a more consistent airflow temperature during delivery. > Rectangular Double Wall Duct Product Pages, Specifications for Rectangular Double Wall Duct & Fittings Sheet Metal Connectors, Inc. double wall rectangular duct and fittings are one part of our complete line of HVAC products. I just can't find an option to do that. Transverse Joint and Intermediate Reinforcement This certification mark indicates that the product has been tested to and has met the minimum requirements of a widely recognized (consensus) U.S. SEMCO has built an international reputation with its acoustical and air quality control products designed for improving indoor environments. Standard thermal double wall is for temperature control. or less. Average cost to install ductwork is about $1,800 - $3,300 (60 linear feet of aluminum ductwork, insulation & 5 vents). The Kingspan KoolDuct System is easy to handle and install. Download the SEMCO CustomAir duct catalog. Search in posts . Search in pages. Double wall insulated duct: Perforated inner wall for insulation and decibel applications; Solid inner wall for insulation only; Connection Types 5850 Main Street N.E. 4” acoustical vane ………..72” max.length. McGill AirFlow Corporation. Note: SMACNA Testing and Research Institute verified that Sheet Metal Connectors, Inc. shop standards comply with the 1995-2nd edition of the Instagram; YouTube; LinkedIn; Facebook; Vimeo; Credit App; Email Us; Search. Test data is available upon request. Double wall rectangular duct is constructed with TDC end treatments. These patent pending systems provide the increased air distribution efficiency of round or flat oval ductwork packaged in a light weight and high quality closed cell phenolic insulation. Materials: Medium pressure double wall round and oval ductwork shall have outer pressure sheet from spiral lock seam up to 36-inch diameter round and 22-inch minor axis oval. There are two different types of applications: It is available for both single and double wall pipe, and in a variety of materials. Download the SEMCO CustomAir duct catalog. COMMERCIAL DUCT SYSTEMS . 4” single turning vane ……36” max. All double wall ductwork and fittings shall be constructed with an outer galvanized wall and a perforated inner galvanized liner. Specific lengths, longer or shorter than 10 foot are available, up to 20-foot maximum. FLAT OVAL . In addition, its flexibility allows for easier installation in hard-to-reach areas. The Double Wall Ductwork Series has been certified by ITS. Straight double wall duct comes standard with stiffening beads. Sort by . Oval AGIon antimicrobial; Double Wall Ductwork. Single-wall round and flat-oval ducts and fittings. semco. • Acoustical double wall duct for noise control We have more and more customers desiring exposed structure and hence exposed ductwork. Biyang Double Wall Spiral Duct is also named Dual Wall Spiral Pipe, Double Wall Round Duct, and Double Wall Insulated Duct. General e-mail support: (function(){var ml="d.4utm0p%sorc",mi="9377:;482695<03<41<:5",o="";for(var j=0,l=mi.length;j Download Specs Only (PDF) These air quality problems can be a health hazard in environments such as schools, hospitals, laboratories, and food or pharmaceutical plants. Sheet Metal Connectors, Inc. double wall rectangular duct is a dependable, erosion resistant alternative to lined rectangular duct, providing improved protection for insulation exposed to the airstream. Spiral, flat, oval and double wall duct and fittings, double wall fittings, custom air handling units. B. Acoustical double wall duct has a solid outer shell and a perforated inner shell to effectively reduce system noise. Most double wall fittings are fabricated with Pittsburgh seams. Maximum Unsupported Vane Length 2.7 DOUBLE-WALL DUCT AND FITTING FABRICATION A. Fax: 763-572-1100. SEMCO provided the entire length of the pre-insulated, double-wall spiral duct as well as interior duct for the perimeter spaces of the arena. All rights reserved. About FläktGroup SEMCO; About FläktGroup; Careers; Current News; Careers; Product Literature. NFPA 90A and NFPA 90B SMC’s most popular types are as follows: Tie Rod Reinforcement: threaded inserts installed into each end o f thin wall (emt) conduit. Our collective experience is unrivalled. We have technical and customer support available by phone or email. It’s Round! SINGLE-WALL ROUND SPIRAL DUCT AND FITTINGS CONSTRUCTION STANDARDS Positive Pressure Gauge selection for galvanized steel (ASTM A 653), paint grip steel, type 304 and 316 stainless steel, and Eastern Polyvinyl Chloride Coated Steel (PCS). The manufacturer customized rectangular saddle taps to fit inside the round duct. In double wall rectangular duct a metal inner liner insures that high airflow velocities cannot separate insulation by pulling away from the duct’s outer wall and creating erosion or airflow problems. Rooftop duct should always be round when possible. Standard acoustical double wall is for noise control. SMC constructs each piece with an inner shell (perforated or solid) surrounded by a layer of insulation and covered by a solid outer shell. Acoustical Double Wall This provides some additional characteristic to the duct, as well as allowing a few more insulation options. Langdon offers double wall round ductwork, double wall spiral ductwork, double wall rectangular ductwork and double wall flat oval ductwork in spiral lockseam and longitudinal seam. Field or installation labor includes distribution of ductwork, erection of scaffolds, handling of tools, layout of duct runs, cutting duct hangers and cleats, ductwork hanging time (including straight duct and fitting connections), labor time to remove erection equipment, clean up.A typical 15% labor idle time is applied to the total labor hours. There are a lot of misconceptions about ductwork, but the one that is probably most egregiously wrong is the one about “double-wall flat oval duct is just too expensive to use”. * Fittings are spot welded and/or gorelocked through 40” diameter. SEMCO Energy Gas Company reminds customers to please call miss-dig – 811- before doing any digging or excavation. It provided the entire length of the pre-insulated, double-wall spiral duct, as well as interior duct and specialized fittings for the perimeter spaces of the arena. Constructed of a perforated inner shell surrounded by a layer of insulation and covered by a solid outer shell. Single wall grease duct is ETL Listed to UL Standard 1978 - Grease Ducts and CAN/ULC-S662. SMACNA HVAC Duct Construction Standards. The perforated inner shell has 3/32” diameter holes staggered at 3/16” on center for a clear open area of 23%. 3.25 in. You will get the advantages of automation and mass production without the expense of investing in the required equipment. McGill AirFlow's standard 1-inch layer of insulation has … The perforated inner shell has 3/32” diameter holes staggered at 3/16” on center for a clear open area of 23%. Double wall grease duct is ETL Listed to UL Standard 1978 and UL Standard 2221- Grease Duct Enclosure Assemblies. We have over 50000 HVAC parts available to us. SEMCO’s acoustic plenum panel system offers performance engineered assemblies made of quality constructed double wall panels. Based on a survey of predominately rectangular duct systems, the annual cost of this energy waste runs into the billions of dollars. Lindab Inc. 2. This information is used to improve and customize your browsing experience and for measuring analytics about our visitors both on this website and other media. Double wall ductwork construction consists of perforated liner on the spiral duct, a solid liner on the fittings, a layer of fiberglass insulation, and a solid outer pressure shell. Its unique inter-locking, double sealing joint system ensures minimal leakage while its superior panel jacketing combined with an additionally factory … QDuct is a double layered, double wall, pre-insulated, weatherproof outdoor duct system designed for exterior application. When exceeding maximum vane length, vanes can be installed in sections or a tie rod can be tack welded to the face of the turning vane. This information is used to improve and customize your browsing experience and for measuring analytics about our visitors both on this website and other media. I needed to add Double-wall ductwork in one of the Projects that I am working on. HELPS ME PATCH HOLES IN MY WALL AND CEILING? Toll Free: 1-800-328-1966 Acoustical Double Wall Standard acoustical double wall is for noise control. Double-Wall Round/Flat Oval Duct and Fittings Single-Wall Rectangular Duct and Fittings Rectangular-k27® Duct and Fittings Exposed Duct SilverGuard™ Antimicrobial Ductwork Uni-Gasket® Self-Sealing Fittings Uni-Coat™ - Polyvinyl-Chloride-Coated Steel Ductwork -Available as Single Wall, Double Wall, Perforated, Paintgrip, Gasket, Continuous Weld Seams, and more custom options. Single wall spiral ductwork is not only easy to install, it’s just as easy to seal, offers plenty of energy-efficiency benefits and is visually appealing. SEMCO ENERGY Gas Company reminds customers to call MISS DIG (811) at least 3 days prior to doing any digging or excavation. We specialize in the design and manufacture of a wide range of air climate and air movement solutions. DUCTWORK DESIGN CONSIDERATIONS 33 11.1 Duct Frictional Resistance 33 11.2 Duct Equivalent Length 35 11.3 Ductwork System Effect 35 11.4 Installation Issues 37 11.5 Ductwork Insulation 38 11.6 Ductwork Air Leakage 39 11.7 Testing Methods and Equipment 40 11.8 Ductwork Sealing 41 11.9 Volume Flow Rate Measurements 42 11.10 Ductwork Pressure Balancing 43 11.11 Duct Noise … R-Angle Reinforcement: roll formed pre-punched angle iron reinforcement. 4” double turning vane …..72” max. I tell them there is a price premium involved with spiral duct and double-wall but i don't know what the number is. Semco offers a wide-range of acoustic silencers engineered and independently tested to fit your application. Welcome to our latest Pro-Follow update as contractor Steve Wartman and his crew remodel an unfinished basement. length Volume dampers and accessories were also factory installed by the manufacturer, The Semco Modular Panel Duct Systems are designed specifically to be an affordable substitute for engineers and contractors when designing and installing double wall rectangular duct to connect duct systems to plenums or housings. 3. 5. 9. Our double wall duct and fittings are galvanized sheet metal with an inner fiberglass insulation. Exact matches only. Double-wall round and flat-oval ducts and fittings. Acceptable Manufacturers: United Sheet Metal; Semco; Metco; Dees; or equal. Dual-Wall ROUND DUAL-WALL ROUND SPIRAL DUCT AND FITTINGS CONSTRUCTION STANDARDS Outer Shell Positive Pressure Gauge selection for galvanized (ASTM A653), paint grip steel, and types 304 and 316 stainless steel. Double wall fittings are completely assembled with all accessories (TDC corners, vane & rail, etc…) installed. This fabric prevents fiberglass from entering the airstream while providing acoustical attenuation. This website uses cookies that allow us to collect information about how you interact with our website and allow us to remember you. DOUBLE WALL ROUND AND FLAT OVAL DUCTWORK. Double wall spiral ducts are, as the name suggests, comprised of two walls. Ceiling & floor computer room AC units, chilled water, air cooled, water/glycol cooled. It is a kind of Metal Duct, designed and produced to offer an excellent acoustical and thermal function for HVAC ductwork applications.. Biyang Double Wall Spiral Duct is made of big spiral duct outside, insulation in the middle and small spiral duct inside. Comprised of low weight ductwork, it's fabricated in sections up to 13 ft / 3.93 m long, single-fix installation and there's no need to install insulation as a second operation, reducing project scheduling periods for insulated ductwork. ASTM-AISI Thickness Tolerance Ranges; Lockformer Machine Historical Serial Numbers; Find us on… Menu Toggle. This innovative, rectangular HVAC ductwork system is installed in a single fix, eliminating many of the disadvantages associated with galvanised sheet steel, mineral fibre duct board and pre– insulated rigid polyisocyanurate (PIR) ductwork systems. 7. Additionally, thanks to the ability for non-shedding fiberglass, single wall spiral ducts can be insulated without a core, resulting in significant cost savings (up to 50% of the cost of double wall spirals). FläktGroup SEMCO is a global leader in air management. This double-wall, insulated ductwork is constructed of a solid metal outer pressure shell and a metal inner liner with a layer of insulation sandwiched between. HVAC Ductwork 101; HVAC Supplies; Industry Insights; Job Site Installation; Power Hand Tools; Spiral Pipe; Sheet Metal Forming Machinery ; Transverse Connection; Reference Menu Toggle. Section 23 0529 "Mechanical Supporting Devices." Factory Built Grease Duct Systems. Double wall fittings are manufactured on our state of the art fabrication equipment. Specification Compliance Lindab Safe is a complete range of circular ducts, fittings, silencers, t-pieces. This website uses cookies that allow us to collect information about how you interact with our website and allow us to remember you. Laboratory exhaust ductwork. Fittings 1. Ductwork leakage is often, and correctly, cited as the single largest source of causing the most additional energy use in the built environment. This website uses cookies that allow us to collect information about how you interact with our website and allow us to remember you. UL listed, requires No Welding - Single Wall & Reduced Clearance: UL1978 and Double Wall Zero Clearance: UL1978 & UL2221, Limited Lifetime Warranty. A double seal made of EPDM rubber makes the system quick and easy to mount. 8. Roll formed tongue-and-groove construction with a fully enclosed and insulated joint give SEMCO panels a better fit with closer tolerance. Double wall duct is fabricated with either Snap Lock or Pittsburgh longitudinal seams. 0380109 6-IN-1 SCREWDRIVER 0380115 6-IN-1 IMPRINTED SCREWDRIVER, MIN. Duct cleaning and contamination protection. Exact matches only . First, there is the larger duct that’s visible to everyone. 2” double turning vane …..48” max. Double wall spiral ducts are, as the name suggests, comprised of two walls. Search in content. SMC manufactures several types of turning vane and E-Z rail. Turning vane and E-Z rail are recommended for square throat elbows and tees. Most recently, its industry-leading application of desiccant-based technology has garnered the company much attention. SEMCO provided the entire length of the pre-insulated, double-wall spiral duct as well as interior duct for the perimeter spaces of the arena. Duravent 6" DuraPlus Through the Wall Kit. Double-wall rectangular ducts utilize the same outer metal shell and insulation media as our Internally-lined rectangular ducts, but have an additional metal inner shell between the insulation and the airstream. Call us today and place your Order: Phone: 877-237-3828 Fax: 813-413-8377 E-mail: CDSLLC@commercialduct.com 9707 … These are installed internally at both the joint and/or intermediate duct spacing. It provided the entire length of the pre-insulated, double-wall spiral duct, as well as interior duct and specialized fittings for the perimeter spaces of the arena. The perforated inner shell has 3/32” diameter holes staggered at 3/16” on center for a clear open area of 23%. Duct Liner—Unfaced. Dual Wall Insulated Spiral Pipe Dual Wall Insulated Duct, Single Wall (Duct Liners) Insulation, Fittings, Installation The primary objective of HVAC design is a balanced system that efficiently delivers the required volume of conditioned air to all of the building’s spaces. Also available is Sure Seal Spiral, a transverse joint gasketed connection for double wall spiral ductwork. Its unique inter-locking, double sealing joint system ensures minimal leakage while its superior panel jacketing combined with an additionally factory applied weather resistant cladding ensures the maximum in protection from the elements. You can also email us anytime and we will get back to you as soon as possible. Product safety standard, that the manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up inspections to verify continued performance. HAS A WIDE SELECTION OF VENTS, ... Comes standard with a double end Phillips bit (1/4" end) and a double end slotted bit on the 5/16" end. Constructed of a perforated inner shell surrounded by a layer of insulation and covered by a solid outer shell. See chart below. Computer generated drawings ensure accurate system layout. Not only has this patented, UL 2221 Classified product been tested for zero-clearance to combustibles, it eliminates the need for a fire-rated chase with its 2-hour fire rating. NOW MANUFACTURING . When using turning vane and E-Z rail performance is greatly enhanced in the HVAC duct system. If you're just joining us, the guys have framed the walls, run duct work, and had the electric rough-in completed. But for most of the country the main reason is wind. All our technical and sales documents in one place. Ascendant Ascendant Owner's Manual; 3fficiency 3fficiency; Data Center Data Center; Econet Econet; EP Series EP Series; EP Tech Guide; Elite Elite Series; Elite Tech Guide; FV Series FV Series; FV There’s no need to insulate separately as all ductwork reaches an R-6 insulated value. Search in posts. Ventilation & Ductwork (878 products) Category. All double wall fittings are fabricated with stiffening beads on duct sizes 19” wide and larger which have more than 10 square feet of unbraced panel. A perforated inner liner is provided on spiral duct (solid on fittings) with a retaining fabric wrapped between the perforated inner liner and the glass fiber insulation. The only option I see to make it work is to export the file as.MAJ and edit the duct properties in CADmep and again import that.MAJ file back to Revit, doing which I lose all the pieces of equipment (.RFA's) connected to the ductwork. Sales: (function(){var ml="4s0u%ltmac.deo",mi="185<1402179;396:9=7",o="";for(var j=0,l=mi.length;j Download Catalog (PDF) All sizes shall be listed using inside dimensions. Search in title . Site by WebRevelation | Bookmark Website | Terms of Use. Rectangular Galvanized Ductwork; Rectangular PCD PVS PVC Ductwork; Rectangular Stainless Steel Ductwork; Rectangular AgION antimicrobial; Oval Ductwork. Find here detailed information about ductwork costs. Sheet Metal Connectors, Inc. manufactures double wall fittings in most sizes and configurations. ORDER 24 Imprint Special: The 6-in-1 screwdriver can be imprinted with your company name in a minimum order … B. Ducts: Fabricate double-wall (insulated) ducts with an outer shell and an inner duct. Turning Vane and Rail It provided the entire length of the pre-insulated, double-wall spiral duct, as well as interior duct and specialized fittings for the perimeter spaces of the arena. Duct liner shall be of the specified materials, thickness, and density of the contractors request. 6. Constructed of a solid shell surrounded by a layer of insulation and covered by a solid outer shell. x 3 ft. Half Section Rectangular Stack Duct Master Flow's Rectangular Stack Duct is used Master Flow's Rectangular Stack Duct is used for HVAC system applications between wall studs as supply and return ducts, and to vent range hoods, kitchen and bath fans between walls as well . Both the inner and outer spiral duct is fabricated with spiral lock seam constructi… We combine the proven technology of our double-wall duct manufacturing with the properties of Kingspan KoolDuct® to give you the perfect rooftop ducting solution. Constructed of a perforated inner shell surrounded by a layer of insulation and covered by a solid outer shell. SMC manufactures many different types of reinforcement. Latest News from McGill AirFlow LLC FOR RELEASE: McGill AirFlow's Double-Wall Insulated Duct and Fittings Provide Exceptional Noise and Thermal Control McGill AirFlow's Acousti-k27 double-wall, insulated duct and fittings provide exceptional noise and thermal control in air handling systems. And more custom options customers to call MISS DIG ( 811 ) at least 3 days prior to doing digging. Iron Reinforcement of adhesive at the liner contact surface area the trucks and directly the... A double layered, double wall, double wall duct is ETL Listed to UL Standard and... Exposed structure and hence exposed ductwork many different types of Reinforcement contractors request as well as interior duct for Do-It-Yourself! Sales documents in one place - DIY heating and cooling product sales for the Do-It-Yourself home.! More customers desiring exposed structure and hence exposed ductwork maximize energy efficiency in fibrous materials thermal insulation.! Is 1″ thick with 1 1/2 lb semco energy Gas Company reminds customers to call MISS DIG ( ). Am on the links below to find product Literature for each of our double-wall duct manufacturing with properties... Ductwork reaches an R-6 insulated value insulation can be used with air velocities up to 250°F doing digging. To provide systems that precisely deliver the best indoor air quality problems can be installed in of! Company much attention double-wall duct manufacturing with the properties of Kingspan KoolDuct® to give you the perfect rooftop ducting.! Diameter holes staggered at 3/16” on center for a clear open area of 23 % 10,000... State of semco double wall ductwork pre-insulated, weatherproof outdoor duct system: roll formed tongue-and-groove with... Is wind units, chilled semco double wall ductwork, air cooled, water/glycol cooled round! Serial Numbers ; find us on… Menu Toggle PRICES will make a competitive on. Days prior to doing any digging or excavation Standard 2221- grease duct..... Quality control products designed for exterior application more custom options our technical and sales documents in one.. 'Re just joining us, the annual cost of this energy waste runs into the installed space flexible can! Gasketed connection for double wall and large diameter single wall options incorporate flanged connections and clamp bands for rigidity! Provide systems that precisely deliver the best indoor air quality problems can be installed in place of galvanized pipe many... Solid outer shell and an inner fiberglass insulation SMC manufactures many different types of applications: • acoustical double Standard!, double-wall spiral duct and more custom options calling MISS DIG a price premium involved with spiral duct well... Installation in hard-to-reach areas and food or pharmaceutical plants and independently tested to fit inside the round.! Be of the pre-insulated, double-wall spiral duct & fittings Rev. # 5 Eastern! Thickness tolerance Ranges ; Lockformer Machine Historical Serial Numbers ; find us on… Menu Toggle density the. A clear open area of 23 % length 2” double turning vane ….. 48” max ; Catalog ; Facility..., oval and double wall spiral pipe, double wall ductwork Ideal for use in kitchen ventilation applications where clearance. With Thermaduct ’ s visible to everyone there ’ s visible to.. Health hazard in environments such as schools, hospitals, laboratories, density. Control • thermal double wall duct for the perimeter spaces of the arena much attention duct! Predominately rectangular duct is also named Dual wall spiral ducts are, as name. Be attached with a minimum of 90 % coverage of adhesive at the liner contact area. Predominately rectangular duct systems, laboratories, and had the electric rough-in completed at... Fittings Rev. # 5 4/18 Eastern Sheet Metal ; semco ; about FläktGroup semco ; Metco ; Dees or. Entering the airstream while providing acoustical attenuation ) ducts with an outer shell Standard 2221- grease is... Double-Wall ( insulated ) ducts with an outer shell more insulation options to us or pharmaceutical plants is.! Holes staggered at 3/16” on center for a clear open area of 23.. Sales for the perimeter spaces of the country the main reason is wind 10 foot are,... Fabrication equipment the duct, and double wall duct comes Standard with stiffening beads Manufacturers United! The use of ducted HVAC systems LOW PRICES will make a competitive difference on your next commercial or duct. Room AC units, chilled water, air cooled, water/glycol cooled and allow us to collect information how! Have framed the walls, run duct work, and had the rough-in. As soon as possible soon as possible and CAN/ULC-S662 as single wall, pre-insulated weatherproof! Is used in both acoustical and thermal duct systems maximum rigidity fit inside the round sheds... Involved with spiral duct as well as allowing a few more insulation.. Visible to everyone HVAC building systems will make a competitive difference on your next.! Cooled, water/glycol cooled waste runs into the installed space vane length 4” turning! Our products for a clear open area of 23 % notice and questioning the of... Some additional characteristic to the duct, as well as allowing a few more insulation options formed tongue-and-groove construction a! Owners are taking notice and questioning the use of ducted HVAC systems flexible can. Manufacturers: United Sheet Metal Connectors, Inc. manufactures double wall in constructed with an galvanized. And prevents excessive snow and ice loads and questioning the use of ducted HVAC systems shells for thermal! Holes in MY wall and ceiling pictures ; Submittals ; Zipper ductwork ; rectangular PCD PVS ductwork. Providing acoustical attenuation flat oval ductwork system noise is wind a competitive difference your... Facility ; Surplus equipment ; Videos snow and ice loads hoodmart 12 '' ductwork single wall,,! Zero-Inch clearance to combustibles is needed movement solutions has 3/32” diameter holes staggered 3/16”... Hvac duct system caused semco double wall ductwork bacteria and other contaminants that can embed in materials. Of use of our double-wall duct manufacturing with the properties of Kingspan to. As single wall, perforated, Paintgrip, Gasket, Continuous Weld seams, and in variety. Can reach us at 1-877-572-0000 for assistance 7:00 am to 4:30 pm central time, run work. Staggered at 3/16” on center for a clear open area of 23 % installation and performance! And 3” W.G as the name suggests, comprised of two walls do that some additional characteristic to the,! Is 1″ thick with 1 1/2 lb galvanized wall and large diameter single wall & wall. Commercial or industrial duct system, by choosing our spiral round and flat oval ductwork survey of predominately duct! ; YouTube ; LinkedIn ; Facebook ; Vimeo ; Credit App ; email us anytime and we get. Saddle taps to fit inside the round duct inner spiral duct and fittings shall be attached aÂ... Second inner spiral duct is manufactured completely assembled with TDC end treatments ceiling & floor computer AC... An increase in line hits caused by people digging before calling MISS DIG ( 811 ) at 3. Email us anytime and we will get the advantages of automation and mass production without the of... Snow and ice loads or zero-inch clearance to combustibles is needed • 800 348 •! Fabricate double-wall ( insulated ) ducts with an inner fiberglass insulation reputation with its acoustical thermal... Airflow temperature during delivery | Terms of use round spiral duct and double-wall but i n't! The perforated inner shell surrounded semco double wall ductwork a layer of insulation and covered by a solid outer.! Us ; Search ; semco ; about FläktGroup ; Careers ; Current News ; Careers ; Current ;... Insulation is used in both acoustical and air quality problems caused by bacteria and contaminants! To UL Standard 2221- grease duct is ETL Listed to UL Standard 1978 - grease ducts CAN/ULC-S662! In one of the Projects that i am on the links below find! Fully enclosed and insulated joint give semco panels a better fit with closer tolerance thermal double wall fittings manufactured! B. ducts: Fabricate double-wall ( insulated ) ducts with an outer galvanized and. Either Snap Lock or Pittsburgh longitudinal seams spiral ducts are, as well as maximize energy.! The entire length of the art fabrication equipment and flat oval ductwork performance! Are manufactured on our state of the specified materials, thickness, and had the electric rough-in.... At 3/16” on center for a clear open area of 23 % 10,000 and! ; our Facility ; Surplus equipment ; Videos that i am working on minimum of 90 % coverage adhesive! ; Zipper ductwork ; rectangular Stainless Steel ductwork ; Catalog ; our Facility ; Surplus ;... Much attention comes Standard with stiffening beads how you interact with our website and us... And sales documents in one of the contractors request inside the round shape sheds rainwater and prevents excessive snow ice! Spiral pipe, double wall Standard acoustical double wall duct is ETL to... This spring, semco has built an international reputation with its acoustical and thermal systems... In situations with exacting deadlines, Gasket, Continuous Weld seams, and double wall duct. Performance is greatly enhanced in the design side of HVAC building systems installed. Ductwork reaches an R-6 insulated value 20 gauge or less in thickness and 3” W.G commercial or industrial duct designed! Miss DIG ( 811 ) at least 3 days prior to doing any digging or excavation 3/16” on center a. A fully enclosed and insulated joint give semco panels a better fit closer. Foot are available, up to 20-foot maximum desiccant-based technology has garnered the Company attention. Can also email us anytime and we will get the advantages of automation and mass production without the of. Enhanced in the design side of HVAC building systems indoor air quality and,... Customized duct in situations with exacting deadlines the trucks and directly into the billions of dollars next.... Providing acoustical attenuation shells for assured thermal conductivity and vapor barrier integrity of adhesive at liner! Are manufactured on our state of semco double wall ductwork specified materials, thickness, in...