Rectangular Ducts

Cut Duct
10′ Duct
90° Elbow

Rectangular Cut Duct (<10’): ATS Part Type #105

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10’ Rectangular Duct: ATS Part Type #110



ATS standard rectangular duct length is 10’–0”. 20’–0” lengths are also available when the widest span is not greater than 54”. Please specify rib locations, if the standard locations (shown above) conflict with your system design. NOTE: on a 10’ length ribs are located 2.5’ from each end. If system vacuum will exceed 14” W.C., contact ATS because rib spacing will need to be modified. For more information on other ATS rectangular ducts, please refer to the part types: #105–Rectangular Cut Duct and #109–20’ Rectangular Duct.

Width Height Wall Thickness Bow Actual O.D. at Peak of Bow
in mm in mm in in mm in mm in mm
2 50 * * 0.19 3/16 5 1/8 3 2 5/8 67
3 80 * * 0.19 3/16 5 1/8 3 3 5/8 92
4 100 * * 0.19 3/16 5 1/8 3 4 5/8 117
6 150 * * 0.19 3/16 5 1/8 3 6 5/8 168
8 200 * * 0.19 3/16 5 1/8 3 8 5/8 219
10 250 * * 0.19 3/16 5 3/16 5 10 3/4 273
12 300 * * 0.19 3/16 5 3/16 5 12 3/4 324
14 360 * * 0.19 3/16 5 1/4 6 14 7/8 378
16 410 * * 0.19 3/16 5 1/4 6 16 7/8 429
18 460 * * 0.19 3/16 5 5/16 8 19 1/8 486
20 510 * * 0.25 1/4 6 5/16 8 21 1/8 537
22 560 * * 0.25 1/4 6 3/8 10 23 1/4 591
24 610 * * 0.25 1/4 6 3/8 10 25 1/4 641
26 660 * * 0.25 1/4 6 7/16 11 27 1/2 699
28 710 * * 0.25 1/4 6 7/16 11 29 1/2 749
30 760 * * 0.25 1/4 6 1/2 13 31 5/8 803
32 810 * * 0.31 5/16 8 1/2 13 33 5/8 854
34 860 * * 0.31 5/16 8 9/16 14 35 3/4 908
36 910 * * 0.31 5/16 8 9/16 14 37 3/4 959
38 970 * * 0.31 5/16 8 5/8 16 39 7/8 1013
40 1020 * * 0.25 1/4 6 5/8 16 41 7/8 1064
42 1070 * * 0.25 1/4 6 11/16 17 44 1/8 1121
44 1120 * * 0.25 1/4 6 11/16 17 46 1/8 1172
46 1170 * * 0.25 1/4 6 3/4 19 48 1/4 1226
48 1220 * * 0.25 1/4 6 3/4 19 50 1/4 1276
50 1270 * * 0.25 1/4 6 3/4 19 52 1/4 1327
52 1320 * * 0.25 1/4 6 13/16 21 54 3/8 1381
54 1370 * * 0.25 1/4 6 13/16 21 56 3/8 1432
60 1520 * * 0.25 1/4 6 7/8 22 62 1/2 1588
68 1730 * * 0.25 1/4 6 7/8 22 70 1/2 1791
72 1830 * * 0.25 1/4 6 1 25 74 7/8 1902
84 2130 * * 0.31 5/16 8 1 1/8 29 87 1/8 2213
120 3050 * * 0.44 7/16 11 1 7/8 48 124 5/8 3165

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Rectangular 90° Elbows: ATS Part Type #: 122, 123, 127 and 128

Width Height Throat Radius Centerline Radius Wall Thickness Bow Actual O.D. at Peak of Bow
in mm in mm in mm in mm in in mm in mm in mm
2 50 * * 2 50 3 76 0.19 3/16 5 1/8 3 2 5/8 67
3 80 * * 3 80 4 1/2 114 0.19 3/16 5 1/8 3 3 5/8 92
4 100 * * 4 100 6 152 0.19 3/16 5 1/8 3 4 5/8 117
6 150 * * 6 150 9 229 0.19 3/16 5 1/8 3 6 5/8 168
8 200 * * 8 200 12 305 0.19 3/16 5 1/8 3 8 5/8 219
10 250 * * 10 250 15 381 0.19 3/16 5 3/16 5 10 3/4 273
12 300 * * 12 300 18 457 0.19 3/16 5 3/16 5 12 3/4 324
14 360 * * 14 360 21 533 0.19 3/16 5 1/4 6 14 7/8 378
16 410 * * 16 410 24 610 0.19 3/16 5 1/4 6 16 7/8 429
18 460 * * 18 460 27 686 0.19 3/16 5 5/16 8 19 1/8 486
20 510 * * 20 510 30 762 0.25 1/4 6 5/16 8 21 1/8 537
22 560 * * 22 560 33 838 0.25 1/4 6 3/8 10 23 1/4 591
24 610 * * 24 610 36 914 0.25 1/4 6 3/8 10 25 1/4 641
26 660 * * 26 660 39 991 0.25 1/4 6 7/16 11 27 1/2 699
28 710 * * 28 710 42 1067 0.25 1/4 6 7/16 11 29 1/2 749
30 760 * * 30 760 45 1143 0.25 1/4 6 1/2 13 31 5/8 803
32 810 * * 32 810 48 1219 0.31 5/16 8 1/2 13 33 5/8 854
34 860 * * 34 860 51 1295 0.31 5/16 8 9/16 14 35 3/4 908
36 910 * * 36 910 54 1372 0.31 5/16 8 9/16 14 37 3/4 959
38 970 * * 38 970 57 1448 0.31 5/16 8 5/8 16 39 7/8 1013
40 1020 * * 40 1020 60 1524 0.25 1/4 6 5/8 16 41 7/8 1064
42 1070 * * 42 1070 63 1600 0.25 1/4 6 11/16 17 44 1/8 1121
44 1120 * * 44 1120 66 1676 0.25 1/4 6 11/16 17 46 1/8 1172
46 1170 * * 46 1170 69 1753 0.25 1/4 6 3/4 19 48 1/4 1226
48 1220 * * 48 1220 72 1829 0.25 1/4 6 3/4 19 50 1/4 1276
50 1270 * * 50 1270 75 1905 0.25 1/4 6 3/4 19 52 1/4 1327
52 1320 * * 52 1320 78 1981 0.25 1/4 6 13/16 21 54 3/8 1381
54 1370 * * 54 1370 81 2057 0.25 1/4 6 13/16 21 56 3/8 1432
60 1520 * * 60 1520 90 2286 0.25 1/4 6 7/8 22 62 1/2 1588
68 1730 * * 68 1730 102 2591 0.25 1/4 6 7/8 22 70 1/2 1791
72 1830 * * 72 1830 108 2743 0.25 1/4 6 1 25 74 7/8 1902
84 2130 * * 84 2130 126 3200 0.31 5/16 8 1 1/8 29 87 1/8 2213
120 3050 * * 120 3050 180 4572 0.44 7/16 11 1 7/8 48 124 5/8 3165

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