Prevents debris and insulation from coming into contact with the speaker. In open ceiling structures, the back box may be used as an enclosure for a speaker by attaching the back box directly to the beam and mounting a speaker to the back box with the hardware provided.
Features- Metal Construction.
- Fire Retardant Damping Material.
- Five Combination 0.5 - 0.75 in. Knockouts.
- Compatible With 2 x 2 ft. & 2 x 4 ft. Ceiling Grids.
- Compatible With Round or Square Baffles.