Thepitt TP550 Square Outlet Box Extension Ring; Steel, 1-1/2 Inch Depth, 29.5 Cubic-Inch, 12-Knockouts

Detailed Description: Thepitt Square outlet box extension ring is made of sturdy steel for durability. It is used for extra cubic inch capacity required for additional wiring. It measures 4-11/16 Inch x 1-1/2 Inch x 4-11/16 Inch. It can be ceiling mounted to use as a junction box or to mount lighting fixtures. Ring is used for conduit, commercial and industrial applications. It comes with 12 knockouts and box type mounting. Ring has a cubic capacity of 29.5 cubic-inches and eight 1/2-Inch Side/four 3/4-Inch Knockouts for cable entry. Ring is UL listed.