Round Ducts

Duct
Ribbed Duct
90° Sweep Elbow
90° 3 Gore Mitered Elbow
90° 5 Gore Mitered Elbow
45° Sweep Elbow
45° 2 Gore Mitered Elbow

Round Duct: ATS Part Types #6, #9 and #10


The ATS standard duct lengths are 10 foot (3 meters) or 20 foot (6 meters).

Nominal Diameter Inner Diameter (ID) Outer Diameter (OD) Wall Thickness Weight
in. mm in. mm in. mm in. in. mm lbs/ft kgs/m
2 50 2 1/4 57 2 7/16 62 0.19 3/16 4.76 0.8 0.4
3 80 3 1/4 83 3 7/16 87 0.19 3/16 4.76 1.4 0.6
4 100 4 1/4 108 4 7/16 113 0.19 3/16 4.76 1.6 0.7
6 150 6 1/4 159 6 7/16 164 0.19 3/16 4.76 2.3 1
8 200 8 1/4 210 8 7/16 214 0.19 3/16 4.76 3.3 1.5
10 250 10 1/4 260 10 7/16 265 0.19 3/16 4.76 4.3 2
12 300 12 1/4 311 12 7/16 316 0.19 3/16 4.76 4.8 2.2
14 360 14 1/4 362 14 7/16 367 0.19 3/16 4.76 5.3 2.4
16 410 16 1/4 413 16 7/16 418 0.19 3/16 4.76 5.3 2.4
18 460 18 1/4 464 18 7/16 468 0.19 3/16 4.76 6.7 3
20 510 20 1/4 514 20 1/2 521 0.25 1/4 6.35 7.5 3.4
22 560 22 1/4 565 22 1/2 572 0.25 1/4 6.35 0
24 610 24 1/4 616 24 1/2 622 0.25 1/4 6.35 0
26 660 26 1/4 667 26 1/2 673 0.25 1/4 6.35 0
28 710 28 1/4 718 28 7/16 722 0.25 1/4 6.35 13.9 6.3
30 760 30 3/8 772 30 9/16 776 0.25 1/4 6.35 13 5.9
32 810 32 3/8 822 32 11/16 830 0.31 5/16 7.94 0
34 860 34 3/8 873 34 11/16 881 0.31 5/16 7.94 0
36 910 36 3/8 924 36 11/16 932 0.31 5/16 7.94 19.5 8.9
38 970 38 3/8 975 38 11/16 983 0.31 5/16 7.94 0

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Round Ribbed Duct: ATS Part Type #8


Nominal Diameter Inner Diameter (ID) Outer Diameter (OD) Wall Thickness Rib Thickness Tot. Outside Dim. Weight
in. mm in. mm in. mm in. in. mm in. mm in. mm lbs/ft kgs/m
40 1020 40 3/8 1026 40 7/8 1038 0.25 1/4 6.35 5/8 16 42 3/4 1086
42 1070 42 3/8 1076 42 7/8 1089 0.25 1/4 6.35 5/8 16 44 3/4 1137
44 1120 44 3/8 1127 44 7/8 1140 0.25 1/4 6.35 5/8 16 46 3/4 1187 30.2
46 1170 46 3/8 1178 46 7/8 1191 0.25 1/4 6.35 5/8 16 48 3/4 1238
48 1220 48 3/8 1229 48 7/8 1241 0.25 1/4 6.35 5/8 16 50 3/4 1289
50 1270 50 3/8 1280 50 7/8 1292 0.25 1/4 6.35 5/8 16 52 3/4 1340
52 1320 52 3/8 1330 52 7/8 1343 0.25 1/4 6.35 3/4 19 55 3/16 1402 31.8
54 1370 54 3/8 1381 54 7/8 1394 0.25 1/4 6.35 3/4 19 57 3/16 1453 35.1
56 1420 56 3/8 1432 56 7/8 1445 0.25 1/4 6.35 3/4 19 59 3/16 1503
58 1470 58 3/8 1483 58 7/8 1495 0.25 1/4 6.35 3/4 19 61 3/16 1554 36.5
60 1520 60 3/8 1534 60 7/8 1546 0.25 1/4 6.35 3/4 19 63 3/16 1605
62 1570 62 3/8 1584 62 7/8 1597 0.25 1/4 6.35 1 25 65 3/4 1670
64 1630 64 3/8 1635 64 7/8 1648 0.25 1/4 6.35 1 25 67 3/4 1721
68 1730 68 3/8 1737 68 7/8 1749 0.25 1/4 6.35 1 25 71 3/4 1822
72 1830 72 3/8 1838 72 7/8 1851 0.25 1/4 6.35 1 25 75 3/4 1924 54.3
76 1930 76 3/8 1940 77 1956 0.31 5/16 7.94 1 25 80 2032
80 2030 80 3/8 2042 81 2057 0.31 5/16 7.94 1 25 84 2134 66.5
84 2130 84 3/8 2143 85 2159 0.31 5/16 7.94 1 1/4 32 88 5/8 2251 72.2
88 2240 88 3/8 2245 89 2261 0.31 5/16 7.94 1 1/4 32 92 5/8 2353
92 2340 92 3/8 2346 93 2362 0.31 5/16 7.94 1 1/4 32 96 5/8 2454
96 2440 96 3/8 2448 97 2464 0.31 5/16 7.94 1 1/4 32 100 3/4 2559
100 2540 100 3/8 2550 101 1/8 2569 0.38 3/8 9.53 1 5/16 33 105 1/16 2669
104 2640 104 3/8 2651 105 1/8 2670 0.38 3/8 9.53 1 5/16 33 109 1/16 2770
108 2740 108 3/8 2753 109 1/8 2772 0.38 3/8 9.53 1 5/16 33 113 1/16 2872
112 2840 112 3/8 2854 113 1/8 2873 0.38 3/8 9.53 1 5/16 33 117 1/16 2973
116 2950 116 3/8 2956 117 1/8 2975 0.44 7/16 11.11 1 1/2 38 121 3/4 3092
120 3050 120 3/8 3058 121 1/8 3077 0.44 7/16 11.11 1 1/2 38 125 3/4 3194
124 3150 124 3/8 3159 125 1/8 3178 0.44 7/16 11.11 1 1/2 38 129 3/4 3296
128 3250 128 3/8 3261 129 1/8 3280 0.44 7/16 11.11 1 1/2 38 133 3/4 3397
132 3350 132 3/8 3362 133 1/8 3381 0.44 7/16 11.11 1 3/4 44 138 1/2 3518
136 3450 136 3/8 3464 137 1/8 3483 0.44 7/16 11.11 1 3/4 44 142 1/2 3620
140 3560 140 3/8 3566 141 1/8 3585 0.44 7/16 11.11 1 3/4 44 146 1/2 3721
144 3660 144 3/8 3667 145 1/8 3686 0.44 7/16 11.11 1 3/4 44 150 1/2 3823
148 3760 148 3/8 3769 149 1/8 3788 0.44 7/16 11.11 1 3/4 44 154 1/2 3924
152 3860 152 3/8 3870 153 1/8 3889 0.44 7/16 11.11 2 51 159 4039
156 3960 156 3/8 3972 157 1/8 3991 0.44 7/16 11.11 2 51 163 4140
160 4060 160 3/8 4074 161 1/8 4093 0.44 7/16 11.11 2 51 167 4242

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Round 90° Sweep Elbow: ATS Part Type #20


Our standard radius 90° sweep elbows have a centerline (CL) radii equal to 1.5 times the nominal diameter. Extensions at each end of the elbow facilitate the use of ATS H-Collars (or ATS internal slip collars) for joining purposes.

Nominal Diameter Inner Diameter Outer Diameter Throat Radius Centerline Radius Wall Thickness Weight Extension Length
in mm in mm in mm in mm in mm in in mm lbs kgs in mm
2 50 2 1/4 57 2 7/16 62 1 13/16 46 3 76 0.19 3/16 4.76 0.5 0.2 3/4 19
3 80 3 1/4 83 3 7/16 87 2 13/16 71 4 1/2 114 0.19 3/16 4.76 1.7 0.8 1 25
4 100 4 1/4 108 4 7/16 113 3 13/16 97 6 152 0.19 3/16 4.76 2.9 1.3 1 3/4 44
6 150 6 1/4 159 6 7/16 164 5 13/16 148 9 229 0.19 3/16 4.76 5 2.3 1 3/4 44
8 200 8 1/4 210 8 7/16 214 7 13/16 198 12 305 0.19 3/16 4.76 9 4.1 1 3/4 44
10 250 10 1/4 260 10 7/16 265 9 13/16 249 15 381 0.19 3/16 4.76 13 5.9 1 3/4 44
12 300 12 1/4 311 12 7/16 316 11 13/16 300 18 457 0.19 3/16 4.76 21 9.5 1 3/4 44
14 360 14 1/4 362 14 7/16 367 13 13/16 351 21 533 0.19 3/16 4.76 32 14.5 1 3/4 44
16 410 16 1/4 413 16 7/16 418 15 13/16 402 24 610 0.19 3/16 4.76 40 18.1 1 3/4 44
18 460 18 1/4 464 18 1/2 470 17 13/16 452 27 686 0.19 3/16 4.76 56 25.4 2 51
20 510 20 1/4 514 20 1/2 521 19 3/4 502 30 762 0.25 1/4 6.35 64 29 2 51
22 560 22 1/4 565 22 1/2 572 21 3/4 552 33 838 0.25 1/4 6.35 76 34.5 2 51
24 610 24 1/4 616 24 1/2 622 24 3/4 629 36 914 0.25 1/4 6.35 88 39.9 2 51
26 660 26 1/4 667 26 9/16 675 25 3/4 654 39 991 0.25 1/4 6.35 98 44.5 2 51
30 760 30 3/16 767 30 1/2 775 29 11/16 754 45 1143 0.25 1/4 6.35 112 50.8 2 51
32 810 32 3/16 818 32 1/2 826 31 11/16 805 48 1219 0.25 1/4 6.35 120 54.4 2 51
36 910 36 3/16 919 36 1/2 927 35 11/16 906 54 1372 0.31 5/16 7.94 140 63.5 2 51

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Round 90° 3 Gore Mitered Elbow: ATS Part Type #24


ATS 90° 3 gore mitered elbows are made to customer specifications. Part type #24 is ideal for applications where tight turning radii or other limitations on size and space make using standard sweep radius elbows impossible.
3 gore mitered elbows available in any standard nominal diameter.

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Round 90° 5 Gore Mitered Elbow: ATS Part Type #25


ATS 90° 5 gore mitered elbows are made to customer specifications. Part type #25 is used for better airflow. 5 gore mitered elbows available in any standard nominal diameter.

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Round 45° Sweep Elbow: ATS Part Type #30


Our standard radius 45° sweep elbows have centerline radii equal to 1.5 times the nominal diameter. Extensions at each end of the elbow facilitate the use of ATS H-Collars (or ATS internal slip collars) for joining purposes.

Nominal Diameter Inner Diameter Outer Diameter Throat Radius Centerline Radius Wall Thickness Weight Extension Length
in mm in mm in mm in mm in mm in in mm lbs kgs in mm
2 50 2 1/4 57 2 3/8 60 1 13/16 46 3 76 0.19 3/16 4.76 0.3 0.1 3/4 19
3 80 3 1/4 83 3 3/8 86 2 13/16 71 4 1/2 114 0.19 3/16 4.76 0.8 0.4 1 25
4 100 4 1/4 108 4 3/8 111 3 13/16 97 6 152 0.19 3/16 4.76 1.5 0.7 1 3/4 44
6 150 6 1/4 159 6 3/8 162 5 13/16 148 9 229 0.19 3/16 4.76 3 1.4 1 3/4 44
8 200 8 1/4 210 8 3/8 213 7 13/16 198 12 305 0.19 3/16 4.76 6.5 2.9 1 3/4 44
10 250 10 1/4 260 10 3/8 264 9 13/16 249 15 381 0.19 3/16 4.76 7.1 3.2 1 3/4 44
12 300 12 1/4 311 12 3/8 314 11 13/16 300 18 457 0.19 3/16 4.76 11 5 1 3/4 44
14 360 14 1/4 362 14 3/8 365 13 13/16 351 21 533 0.19 3/16 4.76 18 8.2 1 3/4 44
16 410 16 1/4 413 16 3/8 416 15 13/16 402 24 610 0.19 3/16 4.76 20 9.1 1 3/4 44
18 460 18 1/4 464 18 7/16 468 17 13/16 452 27 686 0.25 1/4 6.35 27 12.2 2 51
20 510 20 1/4 514 20 7/16 519 19 3/4 502 30 762 0.25 1/4 6.35 32 14.5 2 51
22 560 22 1/4 565 22 7/16 570 21 3/4 552 33 838 0.25 1/4 6.35 38 17.2 2 51
24 610 24 1/4 616 24 7/16 621 24 3/4 629 36 914 0.25 1/4 6.35 42 19.1 2 51
26 660 26 1/4 667 26 7/16 672 25 3/4 654 39 991 0.25 1/4 6.35 47 21.3 2 51
30 760 30 3/16 767 30 3/8 772 29 11/16 754 45 1143 0.25 1/4 6.35 56 25.4 2 51
32 810 32 3/16 818 32 3/8 822 31 11/16 805 48 1219 0.31 5/16 7.94 60 27.2 2 51
36 910 36 3/16 919 36 7/16 930 35 11/16 906 54 1372 0.31 5/16 7.94 70 31.8 2 51

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Round 45° 2 Gore Mitered Elbow: ATS Part Type #32


ATS 45° 2 gore mitered elbows are made to customer specifications. This part is ideal for applications where tight turning radii or other size/space limitations make using standard sweep radius elbows impossible. The use of ATS gored elbows allows for design and installation flexibility.
2 gore mitered elbows available in all standard nominal diameters.
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