Single-Wall and Single-Wall Lined, Round Duct and …

1 An enterprise of United McGill Corporation -Founded in 1951 One Mission ParkGroveport, Ohio 43125-1149614/836-9981, Fax: 614/836-9843E-mail: site: andSingle-Wall Lined, Round duct and FittingsDimensions McGill AirFlow Corporation has a complete line of Single-Wall and Single-Wall lined, Round duct and fittings. The internally-lined product incorporates a rigid or semi-rigid fiberglass insulation with an EPA-registered antimicrobial, erosion-resistantcoating on the air-side surface. The insulation is available in 1- and 1 -inch thicknesses and has thermal and acousticalproperties comparable to the double-wall duct 1 - Single-Wall , Round duct - Available Sizes, Materials, and Thicknesses1 ConstructionDiametersLengths2 Materials3,4 Thicknesses8 UNI-SEAL duct (spiral lockseam)3-84 inches1-20 feetGalvanized Steel28-14 gaugeStainless Steel26-20 gauge3-60 inch5 UNI-RIB duct (spiral lockseamwith standing rib)9-60 inches1-20 feetGalvanized Steel28-22 inchLongitudinalSeam Duct6(solid welded)

2 8-90 inches1-6 feetGalvanized Steel20-10 gaugeStainless Steel22-10 gauge8-84 inch5 Table 2 - Single-Wall , Round Fittings- Available Sizes, Materials, and Thicknesses1 ConstructionDiametersMaterials3,4 ThicknessesUNI-SEAL Fittings7(spot welded and bonded, orstanding seam)3-90 inchesGalvanized Steel26-10 gaugeStainless Steel26-10 gauge3-84 as noted, McGill AirFlow Single-Wall , Round duct and fittings are available with the following diameters: 3- through15-inch diameters in -inch-diameter increments, 16- through 38-inch diameters in 1-inch-diameter increments, and 40-through 90-inch diameters in 2-inch-diameter lengths of Round UNI-SEAL and UNI-RIB duct are 10, 12, and 20 feet; longer lengths are available on specialorder.

3 Standard lengths of Round longitudinal seam duct are 5 and 6 , Round duct and fittings are also available in carbon steel, paintable galvanized steel, and aluminized Single-Wall , Round duct and fittings (polyvinyl-chloride-coated galvanized steel) are available on special Single-Wall , Round duct and fittings are available in larger diameters and greater metal thicknesses on longitudinal seam duct is available in diameters smaller than 8 inches on special 16-gauge (Aluminum - inch) or heavier are fully Table 3 for the full range of available spiral duct diameters by thickness. 1999 McGill AirFlow CorporationUp to 10 in wgSpot weld 1 inch orlap, rivet, and tack weld 3inchesUp to 4 in wgSpot weld 2 inches orlap, rivet, and tack weld 6inchesDuct ConstructionSpiral LockseamLongitudinal SeamSpiral Lockseam with Standing RibRL-2 Seam TypeTable 3 - Available Range of Spiral duct Diameters by Thickness1 GaugeGalvanized Steel, Aluminized Steeland Nongalvanized Carbon SteelStainless Steel(304, 304L, 316 and316L)Polyvinyl-chloride-coatedgalvani zed steelAluminum2 Spiral LockseamDiameter(inches)Spiral Lockseam withStanding RibDiameter(inches)Spiral LockseamDiameter(inches)Spiral LockseamDiameter(inches) Thickness(inches)SpiralLockseamDiameter( inches)

4 SpiralLockseam withStanding RibDiameter(inches)28262422201816143 - 14 1/23 - 263 - 363 - 503 - 603 - 846 - 8424 - 849 - 429 - 609 - 609 - 60N/AN/AN/AN/AN/A3 - 363 - 503 - 603 - 84N/AN/AN/AN/A4 - 264 - 344 - 5015 - 6015 - 84N/ - 263 - 503 - 603 - 603 - 609 - 429 - 60N/AN/AN/A1 Thicker material may be available in some diameter ranges; check with your local sales Aluminum Single-Wall , Round , spiral duct is available in larger diameters on special ConstructionSolid WeldedSpot Welded, Tack Weldedor Mechanical Fastened Sealed with United duct Sealer (Water Based)Standing Seam Resistance Seam WeldedSealed with United duct Sealer (Water Based) Sealed with United duct Sealer (Water Based) Dimensioning (All alphanumeric dimensions are in inches, all angles are in degrees)A-Main barrel inlet diameterB-Main barrel outlet diameterC or D-Branch tap diameter (Note: On tee and lateral fittings with two taps, C is the branch closest to theinlet of the fitting.)

5 On cross fittings, C is the larger of the two taps.)t-Insulation/liner thicknessR-Centerline radiusS-Slip-fit dimension of a fittingF, H, J, L, Q, -Miscellaneous dimensions (refer to specific drawings)V, Z, m, . or 3-Angular measurements (refer to specific drawings)#-Number of elbow gores3 General Notes: Dimensions other than diameters are held within a 1/4-inch tolerance. Single-Wall lined, Round duct dimensions are for the metal shell. Unless ordered otherwise, a given diameter of Single-Wall , Round fittings is sized to slip fit into the samediameter of Single-Wall , Round duct . Single-Wall lined and unlined, Round fittings ordered for a 2-inch slip-fit assembly have a slip-fit section asshown in the following drawings:LinedUnlinedWhere:S = 2 inches Single-Wall duct and fittings can be ordered with Van Stone or applied connectors.

6 These change the makeupdimensions of standard slip-fit dimension ends. Refer to the details on page 35 for further information. Unless ordered otherwise, the branch taps of laterals, crosses, lateral crosses, and Y-fittings are installed atstandard angles to the fittings' bodies and to each other, as shown in the following drawings:For all:Laterals, standard = 45(Crosses, standard = 90(, 3 standard = 180(Lateral Crosses, standard = 45(, 3 standard = 180(Y-Fittings, standard = 90(Note: 3 is the included angle between taps as viewed in cross section (standard is 180(). When ordering fittings ofnonstandard 3, please include an end Notes: For installation information, refer to McGill AirFlow s brochure Installation of Single-Wall duct and Fittings.)))))))

7 Flat oval and rectangular taps are available in lieu of Round . Specify dimensions. The Q dimension of laterals and lateral crosses may be less than, equal to, or greater than the V dimensionof these :McGill AirFlow uses a designation system that simplifies product nomenclature. Most of our products can beaccurately identified using a concise alphanumeric designator. Each character in the designation defines acharacteristic of the : SR4T refers to a Single-Wall (S), Round (R), 4 in wg pressure class (4), straight tee (T).1st Character: Wall Configuration - SR4TS = Single-wallI= Single-Wall , lined (1 and 1 inches only)K= k27 Double-wall2nd Character: Shape - SR4TR =RoundO =Oval3rd Character: Pressure Class - SR4T2=0 to +2 in wg4=+2 to +4 in wg0=+4 to +10 in wgX=0 to -2 in wgY=-2 to -4 in wgZ=-4 to -10 in wgN=nonstandard gauge (user specified)S=standard gauge of product ordering duct or fittings, specify 2, 4, 0, X, Y, Z, S, or N in the * position of the designation.

8 Ranges listed for 2, 4, 0, X, Y, and Z are based on 1995 SMACNA duct ConstructionStandards (galvanized only). is the Sheet Metal and Air Conditioning Contractors National and Subsequent Characters: Product Type - SR4TT = Straight Tee (90( branch fitting)5 Table 4 - Thickness/Weight Relationships of Standard MaterialsGaugeGalvanized and Paintable Galvanized SteelNongalvanized Carbon SteelStainless Steel(304 or 316)MinimumThickness(inches)NominalThick ness(inches)NominalWeight(lb/sq ft)MinimumThickness(inches)NominalThickn ess(inches)NominalWeight(lb/sq ft)MinimumThickness(inches)NominalThickn ess(inches)NominalWeight(lb/sq ft) (inches)NominalThickness(inches)NominalW eight(lb/sq ft) 5 - Material SpecificationsStandard MaterialTypeASTM NumberGalvanized Steel--A653, A924 Stainless Steel304, 304L, 316, 316LA167, A480 Nongalvanized Carbon Steel18 - 28 gaugeA366, A568, A569 Aluminum3003-H14B209 AluminizedType 1A463 Other types of material are available on special 6 - McGill AirFlow Standard Construction MethodsProductConstructionUNI-SEAL DuctSpiral lockseamUNI-RIB DuctSpiral lockseam with standing ribLongitudinal Seam DuctRolled and butt weldedUNI-SEAL Fittings1 Standard: Spot/tack welded, or standingseam and sealed.)

9 Available fully (PVC coated) fittings are button punched, riveted, or screwed and 7 - Unreinforced, Positive Pressure, Single-Wall , Round duct Gauges for Galvanized, Polyvinyl-Chloride(PVC)-Coated Steel, Nongalvanized Carbon Steel, or Stainless SteelMaximumDiameter(inches)+2 in wg+4 in wg+10 in wgSpiralLockseamDuct LongitudinalSeam duct orFittingsSpiralLockseamDuct LongtiudinalSeam duct orFittingsSpiralLockseamDuctLongitudinal Seam Ductor Fittings SpiralLockseamwithStandingRib Duct68101214161819 - 2627 - 3637 - 5051 - 6061 - 8428282828282626262422201826262626262424 2422201816282828282626242422201818262626 2624242422202018162828282626242424222018 18262626242422222220201816 NANA282828282828282626 NATable 8 - Unreinforced, Positive Pressure, Single-Wall , Round duct Thicknesses (inches) for AluminumMaximumDiameter(inches)

10 Maximum+2 in wgMaximum+4 in wgMaximum+10 in wgSpiralLockseamDuctLongitudinalSeam Ductor FittingsSpiralLockseamDuctLongitudinalSe am Ductor FittingsSpiralLockseamDuctLongitudinalSe am duct orFittings68101214161819 - 2627 - 3637 - 5051 - 6061 - for Tables 7 and 8 seam duct is made up of the same gauge as fittings except as noted in Table steel has 26 gauge minimum for spiral lockseam duct and 22 gauge minimum for longitudinal seam duct and -coated galvanized steel has 26 gauge minimum and 18 gauge maximum for duct and of aluminum duct and fittings shall otherwise correspond in the same relationship as for steel duct (see Table 4) forthickness required for equal strength or stiffness. SMACNA does not have aluminum standards for pressures greater in magnitudethan 2 in rating of +10 in wg for ribbed duct is based on McGill AirFlow laboratory 9 -Negative Pressure, Single-Wall , Round duct Gauges for Galvanized, Polyvinyl-Chloride (PVC)-CoatedSteel, Nongalvanized Carbon Steel, or Stainless SteelMaximumDiameter(inches)