3-3/4 in. Square Box, Large capacity, Welded, 3-1/2 in. Deep, Fifteen Knockouts, FM Bracket

Brand: Raco

Catalog ID: 255

3-3/4 in. Square Box, Large capacity, Welded, 3-1/2 in. Deep, Fourteen 1/2 and 3/4 in. Concentric KO's, FM Bracket.

Welded steel construction with "FM" bracket that mounts on flat side of stud
3-3/4 in. square x 3-1/2 in. deep
3-3/4 in. opening in walls allows for margin of error when using a 4 in. square cover
Accepts 4 in. square covers and mud rings
Large capacity design accommodates oversized devices
Supplied with fourteen 1/2-3/4 in. Concentric KO's and one 1/2 in. KO
40.5 cu. in. capacity
Acceptable for use in 2-hour fire rated walls