The store will not work correctly in the case when cookies are disabled.

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

FREE GROUND SHIPPING ON ORDERS OF $300 OR MORE*

Contact Us
Track Order
Products

Search

Advanced Search

Contact Us
Track Order
Products

Compare ()
My Account

Toggle Nav

Toggle Nav

Search

Advanced Search

Unistrut
Distribution/Controls
Pipe/Wire/Fittings
Wire Termination
Wiring Devices
Grounding
Lighting
Tools

Contact Us
Track Order
Products

Compare ()
My Account

Home
Pipe/Wire/Fittings
Boxes & Covers

Boxes & Covers

Outlet Boxes & Covers

Outlet Boxes & Covers (417)

Weatherproof

Weatherproof (58)

Industrial & Explosion Proof

Industrial & Explosion Proof (515)

Floor Boxes

Floor Boxes (20)

Sort By Set Ascending Direction

View as Grid List

4 Items

Show

per page

Quickview
53151 1/2 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring

$2.53 / EAprice:2.533333 final price:2.533333

Availability: 176 EA
Quickview
73151 1/2 3/4 4-11/16" x 1-1/2" x 4-11/16", 29.5 Cu Inch, Pre-Galvanized Welded Steel, 12-Knockout, Square Outlet Box Extension Ring

$4.32 / EAprice:4.320000 final price:4.32

Availability: 17 EA
Quickview
54151-AF 4 IN. OCT BX,W/ARMD CLAMP & HANGER

$4.80 / EAprice:4.800000 final price:4.8

Availability: 14 EA
Quickview
53151 1/2 3/4 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring

$2.25 / EAprice:2.253333 final price:2.253333

Availability: 6 EA

Loading ...

Sort By Set Ascending Direction

View as Grid List

4 Items

Show

per page

Filter

Now Shopping by

Knockout Size (2) 1/2 Inch Conduit Sides,(4) Conduit Cable Ends Remove This Item
Knockout Size (4) 1/2 Inch Conduit Sides, (2) 3/4 Inch Conduit Sides, (4) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends Remove This Item
Knockout Size (6) 1/2 Inch Conduit Sides, (6) 1/2 Inch Conduit Ends Remove This Item

Shopping Options

Manufacturer

Approval

UL 514A 3 items
UL 514A, CSA, FS W-J-800 1 item

Capacity

15.8 Cu Inch 1 item
21 Cu Inch 2 items
29.5 Cu Inch 1 item

Clamp Type

Armored/Metal Clad Cable 1 item

Depth

1-1/2 Inch 4 items

Diameter

4 Inch 1 item

Knockout Location

(2) Sides, (4) Cable Ends 1 item

Knockout Size

(1) 1/2 Inch Bottom, (4) 1/2 Inch Side, (2) (1/2 Inch to 3/4 Inch) Eccentric Knockout Side, (4) Cable End 3 items
(1) 1/2 Inch Bottom, (4) 1/2 Inch Side, (2) 1/2 Inch End, (4) 21/32 Inch End 1 item
(1) 1/2 Inch Bottom, (4) 1/2 Inch Side, (4) Cable End, (2) 1/2 Inch End 1 item
(1) 1/2 Inch Bottom, (4) Cable End, (2) 1/2 Inch End 1 item
(1) 1/2 Inch Bottom, (6) 1/2 Inch Side, (4) Cable End 1 item
(1) 1/2 Inch Conduit Bottom, (1) Conduit Bottom, (3) (1/2 Inch - 3/4 Inch) Conduit Threaded Knockout Bottom, (9) (1/2 Inch - 3/4 Inch) Conduit Threaded Knockout Sides 1 item
(1) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Cable Ends 1 item
(1) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 1 item
(1) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (4) 1/2 Inch Conduit Cable Ends 1 item
(1) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (4) Cable Ends 4 items
(1) 1/2 Inch Conduit Bottom, (2) Cable Bottom, (2) 1/2 Inch Conduit Ends 3 items
(1) 1/2 Inch Conduit Bottom, (2) Cable Bottom, (2) 1/2 Inch Conduit Sides 4 items
(1) 1/2 Inch Conduit Bottom, (2) Cable Bottom, (2) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 3 items
(1) 1/2 Inch Conduit Bottom, (2) Cable Bottom, (4) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 4 items
(1) 1/2 Inch Conduit Bottom, (2) Cable Bottom, (4) Cable Ends 1 item
(1) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) 1/2 Inch Conduit End 1 item
(1) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) Cable End 2 items
(1) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Side, (4) Cable End 1 item
(1) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Sides, (4) 1/2 Inch Conduit Ends 2 items
(1) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Sides, (4) Cable Ends, (2) 1/2 Inch Conduit Ends 1 item
(1) 1/2 Inch Conduit Bottom, (4) 3/4 Inch Conduit Sides, (4) 3/4 Inch Conduit Ends 1 item
(1) 1/2 Inch Conduit Bottom, (4) Conduit Cable 1 item
(1/2 Inch - 3/4 Inch) Conduit Eccentric 4 items
(1/2 to 3/4 Inch) Double Row 1 item
(12) 1/2 Inch Conduit Side, (4) 1/2 Inch Conduit Bottom 1 item
(12) 1/2 Inch Conduit Sides 1 item
(2) 1/2 Inch Bottom (2) (1/2 Inch-3/4 Inch) Eccentric Bottom, (8) 1 Inch Side 1 item
(2) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 2 items
(2) 1/2 Inch Conduit Bottom, (6) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 3 items
(2) 1/2 Inch Conduit Side, (2) 1/2 Inch Conduit End 1 item
(2) 1/2 Inch Conduit Side, (2) 3/4 Inch Conduit Side 1 item
(2) 1/2 Inch Conduit Sides,(4) Conduit Cable Ends 1 item
(2) 1/2 Inch Side, (2) 1/2 Inch End, (2) 1/2 Inch Bottom 1 item
(2) 1/2 Inch, (2) 3/4 Inch Bottom, (10) 3/4 Inch Side 1 item
(2) 1/2 Inch, (2) 3/4 Inch Bottom, (8) 1 Inch Sides 1 item
(2) 3/4 Inch Conduit Bottom, (4) 3/4 Inch Conduit Sides, (2) 3/4 Inch Conduit Ends 1 item
(3) 1/2 Inch Bottom One End, (2) 3/4 Inch Bottom Opposite End, (8) 1/2 Inch Side, (4) 3/4 Inch Side 1 item
(3) 1/2 Inch Bottom One Ends, (2) 3/4 Inch Bottom Opposite Ends, (8) 1/2 Inch Conduit Sides 1 item
(3) 1/2 Inch Bottom, (2) (1/2 to 3/4 Inch) Eccentric Bottom, (4) 1/2 Inch Side, (2) (1/2 to 3/4 Inch) Eccentric Side, (4) 1/2 Inch End, (2) (1/2 to 3/4 Inch) Eccentric End 1 item
(3) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Cable Eccentric Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) 1/2 Inch Conduit End, (2) (1/2 to 3/4 Inch) Conduit Eccentric End 1 item
(3) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Conduit Eccentric Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) 1/2 Inch Cable End, (2) (1/2 to 3/4 Inch) Cable Eccentric End 2 items
(3) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Conduit Eccentric Bottom, (4) 1/2 Inch Conduit Side, (2) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) 1/2 Inch Conduit End, (2) (1/2 to 3/4 Inch) Conduit Eccentric End 3 items
(3) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Conduit Eccentric Bottom, (6) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) 1/2 Inch Conduit End, (2) (1/2 to 3/4 Inch) Conduit Eccentric End 1 item
(3) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Conduit Eccentric Bottom, (6) (1/2 to 3/4 Inch) Conduit Eccentric Side, (6) (1/2 to 3/4 Inch) Conduit Eccentric End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (2) 1 Inch Conduit Sides, (2) 1 Inch Conduit Ends 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (2) 1/2 Inch Conduit Side, (1) 3/4 Inch Conduit Side, (4) 1/2 Inch Conduit End, (2) 3/4 Inch Conduit End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (2) 3/4 Inch Conduit Side, (2) 1 Inch Conduit Side, (2) 3/4 Inch Conduit End, (2) 1 Inch Conduit End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (2) 3/4 Inch Conduit Sides, (2) 3/4 Inch Conduit Ends 3 items
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 1 1/4 Inch Conduit Side, (2) 1 1/4 Inch Conduit End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 1 Inch Conduit Side, (4) 1 Inch Cable End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 1 Inch Conduit Side, (4) 1 Inch Conduit End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 1/2 Inch Conduit Side, (2) 3/4 Inch Conduit Side, (4) 1/2 Inch Conduit End, (2) 3/4 Inch Conduit End 2 items
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 3/4 Inch Conduit Side, (4) 3/4 Inch Cable End 1 item
(3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (4) 3/4 Inch Conduit Side, (4) 3/4 Inch Conduit End 1 item
(3) 1/2 Inch Conduit Bottom, (6) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 1 item
(3) 1/2 Inch, (2) 3/4 Inch 1 item
(4) 1/2 Inch Conduit Bottom 1 item
(4) 1/2 Inch Conduit Bottom, (2) (1/2 to 3/4 Inch) Conduit Eccentric Bottom, (6) (1/2 to 3/4 Inch) Conduit Eccentric Side, (4) (1/2 to 3/4 Inch) Conduit Eccentric End 1 item
(4) 1/2 Inch Conduit Sides, (2) (1/2 Inch - 3/4 Inch) Eccentric Conduit Sides, (4) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends 1 item
(4) 1/2 Inch Conduit Sides, (2) (1/2 Inch - 3/4 Inch)Eccentric Conduit Sides, (4) 1/2 Inch Conduit Ends 1 item
(4) 1/2 Inch Conduit Sides, (2) 3/4 Inch Conduit Sides, (4) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends 2 items
(4) 3/4 Inch Conduit Sides, (4) 3/4 Inch Conduit Ends 1 item
(5) 1/2 Inch Conduit Bottom, (12) 1/2 Inch Conduit Sides 1 item
(5) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends 1 item
(5) 1/2 Inch Conduit Bottom, (2) 1/2 Inch Conduit Sides, (2) 3/4 Inch Conduit Ends 1 item
(5) 1/2 Inch Conduit Bottom, (4) 1/2 Inch Conduit Sides 1 item
(5) 1/2 Inch Conduit Bottom, (6) 1/2 Inch Conduit Side, (6) 1/2 Inch Conduit End 1 item
(6) 1/2 Inch Bottom, (4) 3/4 Inch Bottom, (8) 1/2 Inch Sides, (4) 3/4 Inch Sides, (4) 1/2 Inch Ends 1 item
(6) 1/2 Inch Conduit Bottom, (4) 3/4 Inch Conduit Bottom, (4) 3/4 Inch Conduit Sides, (4) 1 Inch Conduit Sides, (2) 3/4 Inch Conduit Ends, (2) 1 Inch Conduit Ends 1 item
(6) 1/2 Inch Conduit Bottom, (4) 3/4 Inch Conduit Bottom, (6) 1/2 Inch Conduit Sides, (4) 3/4 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends 1 item
(6) 1/2 Inch Conduit Bottom, (4) 3/4 Inch Conduit Bottom, (6) 1/2 Inch Conduit Sides, (6) 3/4 Inch Conduit Sides, (2) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends 1 item
(6) 1/2 Inch Conduit Bottom, (4) 3/4 Inch Conduit Bottom, (8) 3/4 Inch Conduit Sides, (2) 1 Inch Conduit Sides, (2) 3/4 Inch Conduit Ends, (2) 1 Inch Conduit Ends 1 item
(6) 1/2 Inch Conduit Side, (2) 1/2 Inch Conduit End 1 item
(6) 1/2 Inch Conduit Sides, (6) 1/2 Inch Conduit Ends 1 item
(8) 1/2 Inch Conduit Sides, (4) 1/2 Inch Conduit Ends 1 item
(8) 1/2 Inch, (4) 3/4 Inch Side, (2) 1/2 Inch, (2) 3/4 Inch Bottom 1 item
3/4 Inch Conduit Eccentric Side 1 item

Material

Hot Rolled Pre-Galvanized AISI C-1008, ASTM G90-U 0.062 Inch Steel 1 item
Pre-Galvanized Drawn Steel 2 items
Pre-Galvanized Welded Steel 1 item

Mounting

10-1/2 to 18-1/2 Inch Adjustable Bar Hanger 1 item

Number of Knockouts

12 3 items
6 1 item

Shape

Octagon 1 item

Standard Package

20 per Carton 1 item
25 per Carton 1 item
50 per Carton 2 items

Type

Square Box Extension Ring 3 items

Sign Up For Email

Sign Up for Our Newsletter:

Be the first to know about new products, promotions, technology and more!

66 Southern Blvd.
Nesconset, NY 11767
USA
Tel: 631-467-3939
Fax: 631-979-0605
help@kellyhayes.com

cards

Unistrut
Distribution/Controls
Pipe/Wire/Fittings
Wire Termination
Wiring Devices
Grounding
Lighting
Tools

My Account
Contact Us
Privacy Policy
Return Policy
Return/Exchange Form
Multiple Shipments/Delivery Method
Make a Credit Card Payment
Forms
Gallery
Leave Us A Review
Terms & Conditions

FREE GROUND SHIPPING

ON ORDERS OF $300 OR MORE*

Connect with us

©Copyright 2020 Kelly & Hayes. All Rights Reserved.

Choose sharing option

×

Email
Url

Recipient Email(s)

Your Name (required)

Message (optional)

Your Name (required)