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Products in Stock  

 
We have it in stock!

McGill AirFlow's Duct Express service can make your next job easier and more profitable. We now stock the most commonly used sizes of round spiral duct and fittings in our new Uni-Gasket® product line. Uni-Gasket fittings are manufactured with an EPDM rubber gasket that creates a reliable, airtight seal that meets or exceeds SMACNA's Class 3 for leakage (-20 inches wg to +20 inches wg). Their galvanized steel construction also meets SMACNA's +10-inch wg positive pressure standard. Uni-Gasket fittings reduce assembly time by about 30 to 40 percent because their use eliminates the need to seal the system with duct sealer. (Assembly time excludes the time to hang the duct.)

When you need duct and fittings immediately to keep your project on schedule, we can help. We have Uni-Gasket fittings and profiled fittings (without gaskets) in stock and ready for delivery.

Get ductwork when you need it. Contact the McGill sales office in your area about our Duct Express service today.

Duct Express Warehouse

Spiral Duct — round, standard 10-foot lengths, (galvanized steel, not gasketed)
spiral duct

Diameters:
3, 4, 5, 6, 7, 8, 9, 10, 12, and 14 inches—28 gauge(1)
16, 18(2), 20(2), 22(2), and 24(2) inches—26 gauge(1)

Notes:
(1) Gauges meet 2005 SMACNA standards for +10 inches wg and -2 inches wg

(2) Spiral duct in 18-, 20-, 22-, and 24-inch diameters require a 1-inch by 1-inch by 1/8-inch angle ring stiffener every 20 feet for -2 inches wg.


End Plugs — round, for duct, not for fittings
(galvanized steel)
end plug-gasketed
Diameters:
4, 5, 6, 7, 8, 9, 10, 12, 14, 16, and 18 inches—26 gauge
20, 22, and 24 inches—24 gauge

Connectors: Slip Coupling — round, for duct-to-duct connections, not for fitting-to-fitting (galvanized steel)
slip coupling-gasketed
Diameters:
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 14 inches—26 gauge
16, 18, 20, 22, and 24 inches—24 gauge

Elbows — round, (galvanized steel)
Note: All elbows have bend radii approximately equal to 1.5 times the diameter.
Pressed Elbows — two-piece, lap seam welded, 45° and 90°
pressed elbows
Diameters:
3, 4, 5, 6, and 7 inches—24 gauge
8, 9, 10, and 12 inches—22 gauge

Gored Elbows — standing seam construction
45° three-gore and 90° five-gore
gored elbows
Diameters:
14, 16, and 18 inches—26 gauge
20, 22, and 24 inches—24 gauge

Pleated Elbows — 45° and 90°
pleated elbows
Diameters:
4, 5, 6, 7, 8, 9, 10, and 12 inches—26 gauge

Taps— round, (galvanized steel)
Contour Flange, straight side taps — for round duct
contour flange, straight side tap-gasketed
Larger duct (A) diameters and smaller tap (C) (inches)
4 x 4
6 x 6
8 x 8
10 x 10
12 x 12
14 x 14
16 x 16
6 x 4
8 x 6
10 x 8
12 x 10
14 x 12
16 x 14
20 x 16
8 x 4
10 x 6
12 x 8
14 x 10
16 x 12
18 x 14
22 x 16
10 x 4
12 x 6
14 x 8
16 x 10
18 x 12
20 x 14
24 x 16
12 x 4
 
16 x 8
 
 
 
 

Saddle, pressed, straight side taps — for round duct
All diameters are 24 gauge
saddle, straight side tap-gasketed
Larger duct (A) diameters and smaller tap (C) (inches)
8 x 6
10 x 8
12 x 10
14 x 12
10 x 6
12 x 8
14 x 10
16 x 12
12 x 6
14 x 8
16 x 10
18 x 12
 
16 x 8
 
 

Contour Flange , conical taps — for round duct
Diameters: 4, 6, 8, 10, 12, 14, and 16 inches—26 gauge
contour flange, conical tap-gasketed
Larger duct (A) diameters and smaller tap (C) (inches)
6 x 4
8 x 6
10 x 8
12 x 10
14 x 12
16 x 14
20 x 16
8 x 4
10 x 6
12 x 8
14 x 10
16 x 12
18 x 14
22 x 16
10 x 4
12 x 6
14 x 8
16 x 10
18 x 12
20 x 14
24 x 16
12 x 4
 
16 x 8
 
 
 
 

Straight Side Taps, off flat— for rectangular duct
flat flange, straight side tap-gasketed
Diameters:
4, 6, 8, 10, 12, 14, and 16 inches—26 gauge

Conical Taps, off flat — for rectangular duct
flat flange, conical tap-gasketed
Diameters:
4, 6, 8, 10, 12, 14, and 16 inches—26 gauge

Reducers—concentric round, for duct-to-duct connections, not for fitting-to-fitting (galvanized steel)
reducer-gasketed

26 Gauge
Larger duct (A) diameters and smaller (B) diameters (inches)

6 x 4
8 x 4
9 x 7
12 x 8 
16 x 12
6 x 5
8 x 6
9 x 8
12 x 10
16 x 14
7 x 5
8 x 7
10 x 6
14 x 8 
18 x 14
7 x 6
 
10 x 8
14 x 10
18 x 16
 
 
 
14 x 12
 
24 Gauge
Larger duct (A) diameters and smaller (B) diameters (inches)
 
20 x 16
22 x 18
24 x 20
 
 
20 x 18
22 x 20
24 x 22
 
 
 
 
 
 
 


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An enterprise of United McGill Corporation—Family owned and operated since 1951

Unless otherwise noted, all (™) trademarks and (®) registered trademarks are property of United McGill Corporation.

Products depicted were current at the time of publication. All product designs, specifications, and features are subject to change without notice.
 

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