{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "aluminum-channels",
 "name": "Aluminum channels (Aluminum Association standard): C 4 x 1.74, 6 x 2.83, 12 x 8.27 dimensions + STEP/STL",
 "kind": "standard",
 "category": "Hardware",
 "group": "Framing",
 "year": null,
 "question": "What are the dimensions of an aluminum 4 x 1.74 channel?",
 "tags": [
  "aluminum",
  "channel",
  "aluminum association",
  "extrusion",
  "structural"
 ],
 "aliases": [
  "aluminum channel dimensions",
  "aluminum c channel dimensions",
  "aluminum channel sizes",
  "aluminum channel 4 x 1.74",
  "aluminum channel 2 x 1.07",
  "aluminum channel 3 x 1.60",
  "aluminum channel 6 x 2.83",
  "aluminum channel step file",
  "6061 channel dimensions"
 ],
 "overall_mm": {
  "length": 101.6,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 21,
 "url": "https://xemstudio.com/objects/aluminum-channels/",
 "sheet_txt": "https://xemstudio.com/objects/aluminum-channels/sheet.txt",
 "sheet": {
  "basis": "Aluminum Association Standard Structural Profiles 2020: depth, width, flange, web, fillet radius, area",
  "overall_mm": {
   "length": 101.6,
   "width": null,
   "height": null
  },
  "notes": [
   "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."
  ],
  "table": {
   "columns": [
    "designation",
    "lb/ft",
    "depth (in)",
    "width (in)",
    "flange (in)",
    "web (in)",
    "fillet R (in)",
    "area (in2)",
    "depth (mm)",
    "width (mm)"
   ],
   "rows": [
    [
     "2 x 0.577",
     0.577,
     2,
     1,
     0.13,
     0.13,
     0.1,
     0.49,
     50.8,
     25.4
    ],
    [
     "2 x 1.07",
     1.07,
     2,
     1.25,
     0.26,
     0.17,
     0.15,
     0.911,
     50.8,
     31.8
    ],
    [
     "3 x 1.14",
     1.14,
     3,
     1.5,
     0.2,
     0.13,
     0.25,
     0.965,
     76.2,
     38.1
    ],
    [
     "3 x 1.60",
     1.6,
     3,
     1.75,
     0.26,
     0.17,
     0.25,
     1.36,
     76.2,
     44.4
    ],
    [
     "4 x 1.74",
     1.74,
     4,
     2,
     0.23,
     0.15,
     0.25,
     1.48,
     101.6,
     50.8
    ],
    [
     "4 x 2.33",
     2.33,
     4,
     2.25,
     0.29,
     0.19,
     0.25,
     1.98,
     101.6,
     57.1
    ],
    [
     "5 x 2.21",
     2.21,
     5,
     2.25,
     0.26,
     0.15,
     0.3,
     1.88,
     127,
     57.1
    ],
    [
     "5 x 3.09",
     3.09,
     5,
     2.75,
     0.32,
     0.19,
     0.3,
     2.63,
     127,
     69.8
    ],
    [
     "6 x 2.83",
     2.83,
     6,
     2.5,
     0.29,
     0.17,
     0.3,
     2.41,
     152.4,
     63.5
    ],
    [
     "6 x 4.03",
     4.03,
     6,
     3.25,
     0.35,
     0.21,
     0.3,
     3.43,
     152.4,
     82.5
    ],
    [
     "7 x 3.21",
     3.21,
     7,
     2.75,
     0.29,
     0.17,
     0.3,
     2.73,
     177.8,
     69.8
    ],
    [
     "7 x 4.72",
     4.72,
     7,
     3.5,
     0.38,
     0.21,
     0.3,
     4.01,
     177.8,
     88.9
    ],
    [
     "8 x 4.15",
     4.15,
     8,
     3,
     0.35,
     0.19,
     0.3,
     3.53,
     203.2,
     76.2
    ],
    [
     "8 x 5.79",
     5.79,
     8,
     3.75,
     0.41,
     0.25,
     0.35,
     4.92,
     203.2,
     95.2
    ],
    [
     "9 x 4.98",
     4.98,
     9,
     3.25,
     0.35,
     0.23,
     0.35,
     4.24,
     228.6,
     82.5
    ],
    [
     "9 x 6.97",
     6.97,
     9,
     4,
     0.44,
     0.29,
     0.35,
     5.93,
     228.6,
     101.6
    ],
    [
     "10 x 6.14",
     6.14,
     10,
     3.5,
     0.41,
     0.25,
     0.35,
     5.22,
     254,
     88.9
    ],
    [
     "10 x 8.36",
     8.36,
     10,
     4.25,
     0.5,
     0.31,
     0.4,
     7.11,
     254,
     107.9
    ],
    [
     "12 x 8.27",
     8.27,
     12,
     4,
     0.47,
     0.29,
     0.4,
     7.04,
     304.8,
     101.6
    ],
    [
     "12 x 11.8",
     11.8,
     12,
     5,
     0.62,
     0.35,
     0.45,
     10.1,
     304.8,
     127
    ],
    [
     "14 x 13.9",
     13.9,
     14,
     6,
     0.64,
     0.32,
     0.45,
     11.8,
     355.6,
     152.4
    ]
   ]
  }
 },
 "sheet_text": "Aluminum channels (Aluminum Association standard): C 4 x 1.74, 6 x 2.83, 12 x 8.27 dimensions + STEP/STL — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/aluminum-channels/  (sheet CC BY 4.0)\nBasis: Aluminum Association Standard Structural Profiles 2020: depth, width, flange, web, fillet radius, area\nCatalog version: 2026-10-20\n\nOverall (mm): length 101.6\n- 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.\n- 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.\n- 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.\n\ndesignation  lb/ft  depth (in)  width (in)  flange (in)  web (in)  fillet R (in)  area (in2)  depth (mm)  width (mm)\n2 x 0.577  0.577  2.0  1.0  0.13  0.13  0.1  0.49  50.8  25.4\n2 x 1.07  1.07  2.0  1.25  0.26  0.17  0.15  0.911  50.8  31.8\n3 x 1.14  1.14  3.0  1.5  0.2  0.13  0.25  0.965  76.2  38.1\n3 x 1.60  1.6  3.0  1.75  0.26  0.17  0.25  1.36  76.2  44.4\n4 x 1.74  1.74  4.0  2.0  0.23  0.15  0.25  1.48  101.6  50.8\n4 x 2.33  2.33  4.0  2.25  0.29  0.19  0.25  1.98  101.6  57.1\n5 x 2.21  2.21  5.0  2.25  0.26  0.15  0.3  1.88  127.0  57.1\n5 x 3.09  3.09  5.0  2.75  0.32  0.19  0.3  2.63  127.0  69.8\n6 x 2.83  2.83  6.0  2.5  0.29  0.17  0.3  2.41  152.4  63.5\n6 x 4.03  4.03  6.0  3.25  0.35  0.21  0.3  3.43  152.4  82.5\n7 x 3.21  3.21  7.0  2.75  0.29  0.17  0.3  2.73  177.8  69.8\n7 x 4.72  4.72  7.0  3.5  0.38  0.21  0.3  4.01  177.8  88.9\n8 x 4.15  4.15  8.0  3.0  0.35  0.19  0.3  3.53  203.2  76.2\n8 x 5.79  5.79  8.0  3.75  0.41  0.25  0.35  4.92  203.2  95.2\n9 x 4.98  4.98  9.0  3.25  0.35  0.23  0.35  4.24  228.6  82.5\n9 x 6.97  6.97  9.0  4.0  0.44  0.29  0.35  5.93  228.6  101.6\n10 x 6.14  6.14  10.0  3.5  0.41  0.25  0.35  5.22  254.0  88.9\n10 x 8.36  8.36  10.0  4.25  0.5  0.31  0.4  7.11  254.0  107.9\n12 x 8.27  8.27  12.0  4.0  0.47  0.29  0.4  7.04  304.8  101.6\n12 x 11.8  11.8  12.0  5.0  0.62  0.35  0.45  10.1  304.8  127.0\n14 x 13.9  13.9  14.0  6.0  0.64  0.32  0.45  11.8  355.6  152.4\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- 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\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 21 parts): https://xemstudio.com/files/hardware/aluminum-channels/index.json\nAPI: https://xemstudio.com/api/geometry?object=aluminum-channels\n",
 "sources": [
  {
   "publisher": "Engineers Edge",
   "title": "Aluminum Association Standard Channel Sizes (Aluminum Association Standard Structural Profiles, 2020): depth, width, flange, web, fillet radius, area",
   "url": "https://www.engineersedge.com/materials/aluminum_channel_table_13661.htm",
   "formats": [
    "web"
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 "related": [
  "aluminum-i-beams",
  "aluminum-angles",
  "2020-aluminum-extrusion",
  "aisc-c-channels"
 ],
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 "dimensions": "exact (nominal, no printing tolerance)",
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 "mating": [],
 "faq": [
  {
   "q": "What does 4 x 1.74 mean for aluminum channel?",
   "a": "A 4 in deep Aluminum Association channel weighing 1.74 lb per foot."
  }
 ],
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   "note": "Aluminum channel 10 x 6.14: depth 10 in, flange width 3.5 in, flange 0.41 in, web 0.25 in, fillet R 0.35 in, 4 in long"
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   "step": "https://xemstudio.com/files/hardware/aluminum-channels/c-10x8-36-4in.step",
   "stl": "https://xemstudio.com/files/hardware/aluminum-channels/c-10x8-36-4in.stl",
   "note": "Aluminum channel 10 x 8.36: depth 10 in, flange width 4.25 in, flange 0.5 in, web 0.31 in, fillet R 0.4 in, 4 in long"
  },
  {
   "file": "c-12x8-27-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/aluminum-channels/c-12x8-27-4in.step",
   "stl": "https://xemstudio.com/files/hardware/aluminum-channels/c-12x8-27-4in.stl",
   "note": "Aluminum channel 12 x 8.27: depth 12 in, flange width 4 in, flange 0.47 in, web 0.29 in, fillet R 0.4 in, 4 in long"
  },
  {
   "file": "c-12x11-8-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/aluminum-channels/c-12x11-8-4in.step",
   "stl": "https://xemstudio.com/files/hardware/aluminum-channels/c-12x11-8-4in.stl",
   "note": "Aluminum channel 12 x 11.8: depth 12 in, flange width 5 in, flange 0.62 in, web 0.35 in, fillet R 0.45 in, 4 in long"
  },
  {
   "file": "c-14x13-9-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/aluminum-channels/c-14x13-9-4in.step",
   "stl": "https://xemstudio.com/files/hardware/aluminum-channels/c-14x13-9-4in.stl",
   "note": "Aluminum channel 14 x 13.9: depth 14 in, flange width 6 in, flange 0.64 in, web 0.32 in, fillet R 0.45 in, 4 in long"
  }
 ],
 "markdown": "https://xemstudio.com/objects/aluminum-channels/index.md"
}