McMaster-Carr

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	Knockout Trade Size Knockout Trade Size

1/2

3/4

1 1/4

	Outlet Box Component Outlet Box Component

Box

Cover

Extender

	Depth Depth

	For Maximum Number of Devices For Maximum Number of Devices

	Capacity Capacity

29.5 cu. in.

42 cu. in.

66.5 cu. in.

	For Device Type For Device Type

GFCI Outlet

NEMA Outlet

Toggle Switch

	For Number of Outlets For Number of Outlets

	Number of Knockouts Number of Knockouts

	Cover Style Cover Style

Raised

Flat

	For Number of Toggle Switches For Number of Toggle Switches

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9 Products

Steel Outlet Boxes with Knockouts

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

Voltage partitions (sold separately) separate power cable and low-voltage data cable to prevent electromagnetic interference (EMI).

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

Boxes

2 1/8" Dp. and Larger

Outlet Boxes											Voltage Partitions
For Max. No. of Devices	Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Dp.	Capacity, cu. in.	Finish		Each		Each
2	2 Gang	10	1/2, 3/4, 1, 1 1/4, 2	4 11/16"	4 11/16"	3 1/4"	66.5	Zinc Plated	000000000	000000	000000000	00000
2	2 Gang	12	1/2, 3/4, 1	4 11/16"	4 11/16"	2 1/8"	42	Zinc Plated	00000000	0000	000000	00

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 11/16"	4 11/16"	1 1/2"	29.5	Zinc Plated	000000000	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 11/16"	4 11/16"	Zinc Plated	Yes	00000000	00000

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 11/16"	4 11/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	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 with Knockouts

Industry Designation	No. of Knockouts	Knockout Trade Size	Ht.	Wd.	Finish	Mounting Fasteners Included		Each
2 Gang	1	1/2	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	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 11/16"	4 11/16"	1 1/2"	29.5	Zinc Plated	000000000	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 11/16"	4 11/16"	Zinc Plated	Yes	00000000	00000

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 11/16"	4 11/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	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, 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 11/16"	4 11/16"	Zinc Plated	Yes	00000000	00000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
5/8" Dp.
1	2 Gang	2	1	1	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000
2	2 Gang	4	2	2	4 11/16"	4 11/16"	Zinc Plated	Yes	00000000	0000

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