Aluminum channels (Aluminum Association standard): C 4 x 1.74, 6 x 2.83, 12 x 8.27 dimensions + STEP/STL — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/aluminum-channels/ (sheet CC BY 4.0) Basis: Aluminum Association Standard Structural Profiles 2020: depth, width, flange, web, fillet radius, area Catalog version: 2026-10-20 Overall (mm): length 101.6 - Aluminum Association standard channels are named depth x weight: 4 x 1.74 is a 4 in deep channel weighing 1.74 lb per foot. Flanges are parallel and constant thickness. - Dimensions, including the printed fillet radius R at the web-to-flange corners, are from the Aluminum Association Standard Structural Profiles table as reproduced by Engineers Edge. Flange tips are drawn square (no tip radius is printed). The drawn area is within 5 % of the printed area on every size. - Files are 4 in (101.6 mm) long along X, web back at y = 0 and flanges toward +y. The source table shows the 12 in deep, 5 in wide size as '2 x 11.8': it is 12 x 11.8. designation lb/ft depth (in) width (in) flange (in) web (in) fillet R (in) area (in2) depth (mm) width (mm) 2 x 0.577 0.577 2.0 1.0 0.13 0.13 0.1 0.49 50.8 25.4 2 x 1.07 1.07 2.0 1.25 0.26 0.17 0.15 0.911 50.8 31.8 3 x 1.14 1.14 3.0 1.5 0.2 0.13 0.25 0.965 76.2 38.1 3 x 1.60 1.6 3.0 1.75 0.26 0.17 0.25 1.36 76.2 44.4 4 x 1.74 1.74 4.0 2.0 0.23 0.15 0.25 1.48 101.6 50.8 4 x 2.33 2.33 4.0 2.25 0.29 0.19 0.25 1.98 101.6 57.1 5 x 2.21 2.21 5.0 2.25 0.26 0.15 0.3 1.88 127.0 57.1 5 x 3.09 3.09 5.0 2.75 0.32 0.19 0.3 2.63 127.0 69.8 6 x 2.83 2.83 6.0 2.5 0.29 0.17 0.3 2.41 152.4 63.5 6 x 4.03 4.03 6.0 3.25 0.35 0.21 0.3 3.43 152.4 82.5 7 x 3.21 3.21 7.0 2.75 0.29 0.17 0.3 2.73 177.8 69.8 7 x 4.72 4.72 7.0 3.5 0.38 0.21 0.3 4.01 177.8 88.9 8 x 4.15 4.15 8.0 3.0 0.35 0.19 0.3 3.53 203.2 76.2 8 x 5.79 5.79 8.0 3.75 0.41 0.25 0.35 4.92 203.2 95.2 9 x 4.98 4.98 9.0 3.25 0.35 0.23 0.35 4.24 228.6 82.5 9 x 6.97 6.97 9.0 4.0 0.44 0.29 0.35 5.93 228.6 101.6 10 x 6.14 6.14 10.0 3.5 0.41 0.25 0.35 5.22 254.0 88.9 10 x 8.36 8.36 10.0 4.25 0.5 0.31 0.4 7.11 254.0 107.9 12 x 8.27 8.27 12.0 4.0 0.47 0.29 0.4 7.04 304.8 101.6 12 x 11.8 11.8 12.0 5.0 0.62 0.35 0.45 10.1 304.8 127.0 14 x 13.9 13.9 14.0 6.0 0.64 0.32 0.45 11.8 355.6 152.4 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Engineers Edge: Aluminum Association Standard Channel Sizes (Aluminum Association Standard Structural Profiles, 2020): depth, width, flange, web, fillet radius, area — web — Publisher's page; dimensions are facts — https://www.engineersedge.com/materials/aluminum_channel_table_13661.htm Free files (CC BY 4.0, Xem Studio; STEP + STL, 21 parts): https://xemstudio.com/files/hardware/aluminum-channels/index.json API: https://xemstudio.com/api/geometry?object=aluminum-channels