McMaster-Carr logo
    Filter by
    Knockout Trade Size
    Industrial Info Compare
    Number of Outlets
    For Maximum Number of Devices
    Number of Knockouts
    Circular Outlet Diameter
    Outlet Box Component
    For Number of Toggle Switches
    Cover Style
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    27 Products

    Steel Outlet Boxes with Knockouts

    Knockouts allow you to modify these boxes to fit your application.
    Square Outlet Boxes
    Image of Product. Front orientation. Outlet Boxes. Steel Outlet Boxes with Knockouts, Square Outlet Boxes.
    Image of Product. Front orientation. Outlet Boxes. Steel Outlet Boxes with Knockouts, Square Outlet Boxes, With Top and Bottom Mounting Brackets.

    With Top and

    Bottom Mounting

    Brackets

    For Max. No.
    of Devices
    Outlet Box
    Designation
    No. of
    Knockouts
    Knockout Trade
    Size
    Ht.
    Wd.
    Dp.
    Cap., cu.
    in.
    Material
    Each
    Outlet Boxes
    22 Gang
    121/2, 3/4, 1
    4"4"2 1/8"30.3Zinc-Plated Steel71695K1400000
    22 Gang
    161/2, 3/4
    4"4"1 1/2"21Zinc-Plated Steel71695K410000
    22 Gang
    161/2
    4"4"1 1/2"21Zinc-Plated Steel71695K120000
    22 Gang
    161/2, 3/4
    4"4"2 1/8"30.3Zinc-Plated Steel71695K130000
     
    With Top and Bottom Mounting Brackets
    22 Gang
    141/2, 3/4
    4"4"1 1/2"21Zinc-Plated Steel71695K150000
     
    Accessories for Outlet Boxes

    Covers for Steel Outlet Boxes

    Made from zinc-plated steel for corrosion resistance, these UL Listed covers fit over steel outlet boxes to protect wiring connections and provide a finished mounting surface for outlets and switches. They are available in configurations for NEMA outlets, GFCI outlets, toggle switches, and various combinations, so you can match the cover to whatever devices are installed in the box.
    For NEMA Outlets
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For NEMA Outlets, Square.

    Square

    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No.
    of Outlets
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    12 Gang
    24 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K4500000
    22 Gang
    44 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K480000
     
    For GFCI Outlets
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For GFCI Outlets.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No.
    of Outlets
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    12 Gang
    14 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K7600000
    22 Gang
    24 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K1150000
     
    For Toggle Switches
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For Toggle Switches.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No. of Toggle
    Switches
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    12 Gang
    14 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K4400000
    22 Gang
    24 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K470000
     
    For Circular Outlets
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For Circular Outlets.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No.
    of Outlets
    Circular
    Outlet Dia.
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    12 Gang
    11.4"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K6500000
    12 Gang
    11.6"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K670000
    12 Gang
    11.7"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K660000
    12 Gang
    12.1"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K680000
    12 Gang
    12.6"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K690000
     
    For NEMA Outlets and GFCI Outlets
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For NEMA Outlets and GFCI Outlets.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No. of
    NEMA Outlets
    For No. of
    GFCI Outlets
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    22 Gang
    214 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K7700000
     
    For NEMA Outlets and Toggle Switches
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For NEMA Outlets and Toggle Switches.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No. of
    NEMA Outlets
    For No. of Toggle
    Switches
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    22 Gang
    214 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K4600000
     
    For NEMA Outlets and Circular Outlets
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For NEMA Outlets and Circular Outlets.
    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No. of
    NEMA Outlets
    For No. of Circular
    Outlets
    Circular
    Outlet Dia.
    Ht.
    Wd.
    Dp.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    22 Gang
    211.6"4 1/8"4 1/8"9/16"RaisedZinc-Plated SteelYesUL Listed
    71695K116000000
     
    For NEMA Outlets, GFCI Outlet, and Toggle Switches
    Image of Product. Front orientation. Outlet Box Covers. Covers for Steel Outlet Boxes, For NEMA Outlets, GFCI Outlet, and Toggle Switches, Square.

    Square

    Square—Fit standard square outlet boxes and are available in raised profiles that bring devices closer to the finished wall surface, making them compatible with boxes set back from the wall.
    1/2" Deep
    5/8" Deep
    For Max. No.
    of Devices
    Outlet Box
    Designation
    For No. of
    NEMA Outlets
    For No. of
    GFCI Outlets
    For No. of Toggle
    Switches
    Ht.
    Wd.
    Cover
    Style
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Each
    Square
    12 Gang
    2114"4"RaisedZinc-Plated SteelNoUL Listed
    ———071695K7400000
    12 Gang
    2114 1/16"4 1/16"RaisedZinc-Plated SteelNoUL Listed
    71695K7200000———0
    22 Gang
    4224"4"RaisedZinc-Plated SteelNoUL Listed
    ———071695K750000
    22 Gang
    4224 1/16"4 1/16"RaisedZinc-Plated SteelNoUL Listed
    71695K730000———0
     

    Blank Covers for Steel Outlet Boxes

    Close off unused outlets to protect against dust, debris, and accidental contact with live wiring. These zinc-plated steel covers resist corrosion in damp or humid environments. All are UL Listed for code-compliant installations.
    Flat—Flat covers sit flush for a clean, low-profile finish on sealed junction boxes.
    Knockout—Knockout covers allow a conduit or cable connection while still covering the remaining opening.
    Raised—Raised covers add depth to accommodate wire splices or connections inside the box.
    Flat Covers
    Image of Product. Front orientation. Outlet Box Covers. Blank Covers for Steel Outlet Boxes, Flat Covers, Square.

    Square

    Outlet Box
    Designation
    Ht.
    Wd.
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    2 Gang
    4"4"Zinc-Plated SteelNoUL Listed
    71695K4300000
     
    Flat Covers with Knockouts
    Image of Product. Front orientation. Outlet Box Covers. Blank Covers for Steel Outlet Boxes, Flat Covers with Knockouts, Square.

    Square

    Outlet Box
    Designation
    No. of
    Knockouts
    Knockout
    Trade Size
    Ht.
    Wd.
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    2 Gang
    11/2
    4"4"Zinc-Plated SteelNoUL Listed
    71695K7100000
     
    Raised Covers
    Image of Product. Front orientation. Outlet Box Covers. Blank Covers for Steel Outlet Boxes, Raised Covers.
    Outlet Box
    Designation
    Ht.
    Wd.
    Dp.
    Material
    Mounting Fasteners
    Included
    Certification
    Each
    Square
    2 Gang
    4 1/8"4 1/8"9/16"Zinc-Plated SteelNoUL Listed
    71695K11400000
     

    Extenders with Knockouts for Steel Outlet Boxes

    Add depth to your outlet box. These extenders mount over existing steel outlet boxes to provide additional wiring space. Use them when boxes are set too far back from the finished wall surface. All are UL Listed and made of zinc-plated steel for corrosion resistance.
    Square
    Image of Product. Front orientation. Outlet Box Extenders. Extenders with Knockouts for Steel Outlet Boxes, Square.
    Outlet Box
    Designation
    No. of
    Knockouts
    Knockout
    Trade Size
    Ht.
    Wd.
    Dp.
    Cap., cu.
    in.
    Material
    Certification
    Each
    2 Gang
    121/2, 3/4
    4"4"1 1/2"22.5Zinc-Plated SteelUL Listed
    71695K4200000
    Covers
    back to top