Single-Wall Rectangular Duct
Single-Wall Rectangular Duct
McGill AirFlow's single-wall, rectangular duct and fittings are factory fabricated to furnish you with a high-quality line of products in a broad range of standard sizes. To minimize field-assembly costs, rectangular duct is supplied in lengths up to 6 feet. Longitudinal seams are typically made with Pittsburgh locks or button-punch snap locks. In addition to economical TDC™ transverse duct connectors, S & drive slip joints, four-bolt connectors, and applied duct connectors are available. Rectangular ductwork can be shipped completely assembled or knocked down. McGill AirFlow's standard rectangular products are fabricated to meet SMACNA's 1995 duct construction standards. Plus, we can custom fabricate rectangular ductwork for commercial and industrial applications according to your specifications.
| Construction | Materials3 | Thickness |
|---|---|---|
Uni-Seal™ (Pittsburgh Lockseam) |
Galvanized Steel | 28-18 gauge1 |
| Stainless Steel | 26-22 gauge2 | |
| Aluminum | 0.032-0.063 inch | |
Uni-Seal (Button-Punch Snap Lock) |
Galvanized Steel | 28-20 gauge1 |
| Stainless Steel | 26-22 gauge2 | |
| Aluminum | 0.032-0.063 inch |
Notes
- Galvanized steel fittings with Pittsburgh lockseam construction are also available in 16 gauge.
- Stainless steel fittings with Pittsburgh lockseam construction are also available in 20 gauge.
- SilverGuard™ rectangular, single-wall duct and fittings (pre-coated with an antimicrobial) are available on special order.
Acousti-Line™ Insulating Liner
Single-Wall, Rectangular Ductwork with Acousti-Line™ Insulating Liner
Single-wall, rectangular ductwork is available with an Acousti-Line insulating liner coated to protect against erosion and microbial growth. This acoustical/thermal liner can be used with air velocities up to 5,000 fpm and temperatures up to 250°F. It is available in thicknesses of 1, 1 1/2, and 2 inches and has a maximum thermal conductivity (k) factor of 0.27 BTU/hour/square foot/°F/inch thickness. Formulated with an antimicrobial agent that is EPA registered, the liner's acrylic coating resists the growth of fungus and bacteria (tested in accordance with ASTM C 1071 and ASTM G21 and G22). The liner's surface can be cleaned according to procedures detailed in the North American Insulation Manufacturers Association (NAIMA) Duct Cleaning Guide.
Assembly Options
| Construction | Size Limitations1 |
|---|---|
| Fully Assembled | None |
| L-Shaped | 20 inches ≤ W + H ≤ 120 inches |
| Wrap Around | W + H < 20 inches |
| W = Width (inches); H = Depth (inches) | |
Notes
- Contact your local sales representative for other available sizes.
ASTM Material Specifications
| Standard Material1 | Type | ASTM Number |
|---|---|---|
| Galvanized Steel | - | A653, A924 |
| Stainless Steel | 304, 304L, 3165, 316L | A167, A480 |
| Nongalvanized Carbon Steel | 20-28 gauge | A366, A568, A569 |
| 10-18 gauge | A619 | |
| Aluminum | 3003-H14 | B209 |
| Aluminized | 1 | A463 |
| Other types of material are available. | ||
Notes
- SilverGuard™ rectangular, single-wall duct and fittings (pre-coated with an antimicrobial) are available on special order.
Available Connectors
| End Connectors | 5-foot Duct Length | 6-foot Duct Length |
|---|---|---|
| Raw End | 60 inches | 72 |
| S and Drive Slips | 59 inches | 71 inches |
| TDC | 56 1/4 inches | 68 1/4 inches |
| Applied Connectors | 60 1/4 inches | 72 1/4 inches |
End Connector Details
Galvanized Steel: 20 gauge maximum
Stainless Steel: 24 gauge maximum
Aluminum: 0.050-inch maximum
Galvanized Steel: 20 gauge maximum
Stainless Steel: 24 gauge maximum
Aluminum: 0.050-inch maximum
Galvanized Steel: 20 gauge maximum
Stainless Steel: 24 gauge maximum
Aluminum: 0.050-inch maximum
Automated Production with the Latest Manufacturing Technology
McGill AirFlow fabricates rectangular duct on automated coil lines to produce large orders quickly and economically. That benefits you by providing products with dependable quality at a low cost. With our large-scale manufacturing capabiities, we can help you on major projects and make sure that small orders are delivered quickly. Our ability to produce round, flat oval, and rectangular products enables us to supply all the sheet metal ductwork that you need for your projects.
