Square Boxes and Extension Rings are manufactured from durable pre-galvanized steel, and are designed to house and protect electrical wiring, switches, receptacles, and to support light fixtures. All steel boxes are UL listed and acceptable for use in 2-hour fire rated walls and ceilings. 8-32 cover mounting screws are assembled.
- With proper fitting can be used for conduit, NMSC, armored, metal clad, flex cable
- Ideal for mounting life safety notification devices in old work applications
- 30.3 cu. in. capacity
- Acceptable for use in two hour fire rated wall