Free 3D Assemblies

Models made of several parts. Every file here is public domain: open it in your browser, then download it and use it for anything.

3354 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain

2199 3D parts with Assembly · Clear all

  • Hot aisle door - Original MEP CADstepRotate in 3D
    Hot aisle door - Original MEP CAD

    Hot aisle door - Original MEP CAD. Overall size 1.200 x 0.080 x 2.200 m; original unbranded model. Overall 1.2 x 0.1 x 2.2 m. Nominal size: 1200 x 80 x 2200 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Cable management - Original MEP CADstepRotate in 3D
    Cable management - Original MEP CAD

    Cable management - Original MEP CAD. Overall size 0.483 x 0.104 x 0.089 m; original unbranded model. Overall 483 x 104 x 89 mm. Nominal size: 2U. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Ups floor unit - Original MEP CADstepRotate in 3D
    Ups floor unit - Original MEP CAD

    Ups floor unit - Original MEP CAD. Overall size 0.450 x 0.796 x 1.250 m; original unbranded model. Overall 450 x 796 x 1250 mm. Nominal size: 450 x 780 x 1250 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Switchboard - Original MEP CADstepRotate in 3D
    Switchboard - Original MEP CAD

    Switchboard - Original MEP CAD. Overall size 1.600 x 0.644 x 2.100 m; original unbranded model. Overall 1.6 x 0.6 x 2.1 m. Nominal size: 1600 x 600 x 2100 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Standby generator enclosure - Original MEP CADstepRotate in 3D
    Standby generator enclosure - Original MEP CAD

    Standby generator enclosure - Original MEP CAD. Overall size 2.300 x 0.960 x 1.597 m; original unbranded model. Overall 2.3 x 1 x 1.6 m. Nominal size: 2300 x 950 x 1450 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Pad mount transformer - Original MEP CADstepRotate in 3D
    Pad mount transformer - Original MEP CAD

    Pad mount transformer - Original MEP CAD. Overall size 1.420 x 1.150 x 1.500 m; original unbranded model. Overall 1420 x 1150 x 1500 mm. Nominal size: 1300 x 1100 x 1500 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Floor box - Original MEP CADstepRotate in 3D
    Floor box - Original MEP CAD

    Floor box - Original MEP CAD. Overall size 0.254 x 0.234 x 0.108 m; original unbranded model. Overall 254 x 234 x 108 mm. Nominal size: 240 x 220 x 100 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Distribution board - Original MEP CADstepRotate in 3D
    Distribution board - Original MEP CAD

    Distribution board - Original MEP CAD. Overall size 0.600 x 0.189 x 0.900 m; original unbranded model. Overall 600 x 189 x 900 mm. Nominal size: 600 x 160 x 900 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Conduit and trunking set - Original MEP CADstepRotate in 3D
    Conduit and trunking set - Original MEP CAD

    Conduit and trunking set - Original MEP CAD. Overall size 0.560 x 0.134 x 1.275 m; original unbranded model. Overall 560 x 134 x 1275 mm. Nominal size: 600 x 250 x 1200 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Cable tray tee - Original MEP CADstepRotate in 3D
    Cable tray tee - Original MEP CAD

    Cable tray tee - Original MEP CAD. Overall size 1.200 x 0.850 x 0.100 m; original unbranded model. Overall 1200 x 850 x 100 mm. Nominal size: 1200 x 850 x 100 mm nominal assembled envelope. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Cable ladder - Original MEP CADstepRotate in 3D
    Cable ladder - Original MEP CAD

    Cable ladder - Original MEP CAD. Overall size 0.600 x 2.000 x 0.100 m; original unbranded model. Overall 600 x 2000 x 100 mm. Nominal size: 600 mm wide x 2000 mm long x 100 mm high. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Busbar trunking section - Original MEP CADstepRotate in 3D
    Busbar trunking section - Original MEP CAD

    Busbar trunking section - Original MEP CAD. Overall size 0.192 x 0.132 x 1.500 m; original unbranded model. Overall 192 x 132 x 1500 mm. Nominal size: 180 x 120 x 1500 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Battery cabinet - Original MEP CADstepRotate in 3D
    Battery cabinet - Original MEP CAD

    Battery cabinet - Original MEP CAD. Overall size 0.800 x 0.840 x 1.800 m; original unbranded model. Overall 800 x 828 x 1800 mm. Nominal size: 800 x 800 x 1800 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Automatic transfer switch - Original MEP CADstepRotate in 3D
    Automatic transfer switch - Original MEP CAD

    Automatic transfer switch - Original MEP CAD. Overall size 0.700 x 0.296 x 1.000 m; original unbranded model. Overall 700 x 296 x 1000 mm. Nominal size: 700 x 260 x 1000 mm. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Strainer - Original MEP CADstepRotate in 3D
    Strainer - Original MEP CAD

    Strainer - Original MEP CAD. Overall size 0.245 x 0.150 x 0.181 m; original unbranded model. Overall 245 x 150 x 181 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Round duct tee - Original MEP CADstepRotate in 3D
    Round duct tee - Original MEP CAD

    Round duct tee - Original MEP CAD. Overall size 0.806 x 0.479 x 0.258 m; original unbranded model. Overall 806 x 479 x 258 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Round duct straight - Original MEP CADstepRotate in 3D
    Round duct straight - Original MEP CAD

    Round duct straight - Original MEP CAD. Overall size 0.258 x 0.258 x 1.000 m; original unbranded model. Overall 258 x 258 x 1000 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Round duct reducer - Original MEP CADstepRotate in 3D
    Round duct reducer - Original MEP CAD

    Round duct reducer - Original MEP CAD. Overall size 0.258 x 0.258 x 0.400 m; original unbranded model. Overall 258 x 258 x 400 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Round duct elbow - Original MEP CADstepRotate in 3D
    Round duct elbow - Original MEP CAD

    Round duct elbow - Original MEP CAD. Overall size 0.443 x 0.443 x 0.258 m; original unbranded model. Overall 443 x 443 x 258 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Rectangular duct tee - Original MEP CADstepRotate in 3D
    Rectangular duct tee - Original MEP CAD

    Rectangular duct tee - Original MEP CAD. Overall size 0.800 x 1.000 x 0.250 m; original unbranded model. Overall 800 x 1000 x 250 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Rectangular duct straight - Original MEP CADstepRotate in 3D
    Rectangular duct straight - Original MEP CAD

    Rectangular duct straight - Original MEP CAD. Overall size 0.430 x 0.280 x 1.000 m; original unbranded model. Overall 430 x 280 x 1000 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Rectangular duct reducer - Original MEP CADstepRotate in 3D
    Rectangular duct reducer - Original MEP CAD

    Rectangular duct reducer - Original MEP CAD. Overall size 0.430 x 0.280 x 0.500 m; original unbranded model. Overall 430 x 280 x 500 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Rectangular duct elbow - Original MEP CADstepRotate in 3D
    Rectangular duct elbow - Original MEP CAD

    Rectangular duct elbow - Original MEP CAD. Overall size 0.550 x 0.550 x 0.250 m; original unbranded model. Overall 550 x 550 x 250 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

  • Pressure reducing valve - Original MEP CADstepRotate in 3D
    Pressure reducing valve - Original MEP CAD

    Pressure reducing valve - Original MEP CAD. Overall size 0.265 x 0.150 x 0.304 m; original unbranded model. Overall 265 x 150 x 304 mm. Nominal size: Nominal 60 mm pipe / 250–400 mm duct. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.

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