Single and double gang metallic outlet and switch boxes are acceptable for use in two hour fire rated walls
Boxes with concentric or eccentric knockouts are suitable for bonding without any additional bonding means where used in circuits above or below 250 VAC
All concentric or eccentric knockouts are 1/2 to 3/4 in combinations
Two nail holes each side
Leveling bosses
(2) 1/2 in, (4) 21/32 in end, (1) 1/2 in bottom knockouts
Specificationsarrow_drop_down
Application: For use in Fire-Rated Assemblies
Cable Entry: Knockout
Capacity: 12.5 cu-in
Dimensions: 3 in H x 2 in W x 2-1/2 in D
Finish: Pre-Galvanized
Knockout Size: 1/2 in, 21/32 in
Material: Steel
Mfg Standards/Approvals: UL 514A, 514B, 514D, E2527, NEMA FB-1, OS-1 Standard