Square plenum boxes are used in above-ceiling applications were air-tight enclosures are required. To maintain plenum seal, the box does not provide ground screw holes. All steel boxes are UL listed.
- 4 in. square x 1-1/2 in. deep
- Drawn steel construction (no holes in box for plenum applications)
- Supplied with eleven 1/2 in. and six 3/4 in. knockouts
- 22.5 cu. in. capacity
- Do not use to support ceiling fans
- 5.0 cu. in. capacity