4 Square Boxes | McMaster-Carr

	Width Width

4 1/8"

	Depth Depth

1/2"

	Outlet Box Component Outlet Box Component

Box

Cover

Extender

	Height Height

4 1/8"

	Knockout Trade Size Knockout Trade Size

1/2

3/4

	For Maximum Number of Devices For Maximum Number of Devices

	Number of Knockouts Number of Knockouts

	For Number of Outlets For Number of Outlets

	Capacity Capacity

21 cu. in.

22.5 cu. in.

30.3 cu. in.

	For Device Type For Device Type

	Cover Style Cover Style

Raised

Flat

	Circular Outlet Diameter Circular Outlet Diameter

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Number of Toggle Switches For Number of Toggle Switches

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27 Products

Steel Outlet Boxes with Knockouts

Knockouts allow you to modify these boxes to fit your application.

For technical drawings and 3-D models, click on a part number.

Boxes

2 1/8" Dp. and Larger

1 1/2" Dp.

For Max. No. of Devices	Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Dp.	Capacity, cu. in.	Finish		Each
2	2 Gang	12	1/2, 3/4, 1	4"	4"	2 1/8"	30.3	Zinc Plated	00000000	00000
2	2 Gang	16	1/2	4"	4"	1 1/2"	21	Zinc Plated	00000000	0000
2	2 Gang	16	1/2, 3/4	4"	4"	1 1/2"	21	Zinc Plated	00000000	0000
2	2 Gang	16	1/2, 3/4	4"	4"	2 1/8"	30.3	Zinc Plated	00000000	0000

Boxes with Mounting Brackets

For Max. No. of Devices	Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Dp.	Capacity, cu. in.	Finish		Each
2	2 Gang	14	1/2, 3/4	4"	4"	1 1/2"	21	Zinc Plated	00000000	00000

Extenders

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Dp.	Capacity, cu. in.	Finish		Each
2 Gang	12	1/2, 3/4	4"	4"	1 1/2"	22.5	Zinc Plated	00000000	00000

Flat Blank Covers

Industry Designation	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	4"	4"	Zinc Plated	Yes	00000000	00000

Flat Blank Covers with Knockouts

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	1	1/2	4"	4"	Zinc Plated	Yes	00000000	00000

Raised Blank Covers

Industry Designation	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2 Gang	4 1/8"	4 1/8"	9/16"	Zinc Plated	No	000000000	00000

Covers for NEMA Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	0000

Covers for Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	1.4"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
1	2 Gang	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	1.7"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.1"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for NEMA and GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

Covers for NEMA Outlets and Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

Covers for NEMA and Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Circular Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	000000

Covers for NEMA Outlets, GFCI Outlets, or Toggle Switches

1/2" Dp.
For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	For No. of Toggle Switches	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000

Covers for Steel Outlet Boxes

For technical drawings and 3-D models, click on a part number.

For NEMA Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

For GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	0000

For Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

For Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	1.4"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
1	2 Gang	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	1.7"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.1"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

For NEMA and GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

For NEMA Outlets and Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

For NEMA and Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Circular Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	000000

For NEMA Outlets, GFCI Outlets, or Toggle Switches

1/2" Dp.
For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	For No. of Toggle Switches	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000

Blank Covers for Steel Outlet Boxes

Close off unused outlets.

For technical drawings and 3-D models, click on a part number.

Flat

Industry Designation	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	4"	4"	Zinc Plated	Yes	00000000	00000

Flat with Knockouts

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	1	1/2	4"	4"	Zinc Plated	Yes	00000000	00000

Raised

Industry Designation	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2 Gang	4 1/8"	4 1/8"	9/16"	Zinc Plated	No	000000000	00000

Extenders with Knockouts for Steel Outlet Boxes

Add depth to your outlet box.

For technical drawings and 3-D models, click on a part number.

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Dp.	Capacity, cu. in.	Finish		Each
2 Gang	12	1/2, 3/4	4"	4"	1 1/2"	22.5	Zinc Plated	00000000	00000

Flat Blank Covers

Industry Designation	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	4"	4"	Zinc Plated	Yes	00000000	00000

Flat Blank Covers with Knockouts

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	1	1/2	4"	4"	Zinc Plated	Yes	00000000	00000

Raised Blank Covers

Industry Designation	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2 Gang	4 1/8"	4 1/8"	9/16"	Zinc Plated	No	000000000	00000

Covers for NEMA Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	0000

Covers for Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	2	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
1	2 Gang	1	1.4"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000
1	2 Gang	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	1.7"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.1"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000
1	2 Gang	1	2.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	0000

Covers for NEMA and GFCI Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

Covers for NEMA Outlets and Toggle Switches

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Toggle Switches	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	00000000	00000

Covers for NEMA and Circular Outlets

For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of Circular Outlets	Circular Outlet Dia.	Ht.	Wd.	Dp.	Finish	Mounting Fasteners Included		Each
2	2 Gang	2	1	1.6"	4 1/8"	4 1/8"	9/16"	Zinc Plated	Yes	000000000	000000

Covers for NEMA Outlets, GFCI Outlets, or Toggle Switches

1/2" Dp.
For Max. No. of Devices	Industry Designation	For No. of NEMA Outlets	For No. of GFCI Outlets	For No. of Toggle Switches	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4"	4"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4"	4"	Zinc Plated	Yes	00000000	0000