- Bogen round recessed ceiling speaker enclosure - Protective enclosure for an 8" cone-type loudspeakers - Designed for recessed installations and for use with any of the Bogen ceiling grilles - One-piece steel construction includes a mounting ring and a foam insert to reduce metallic resonance - Finished in rust-resistant black primer and is tapered for easy stacking - UL approved - 4 Combination 1/2" x 3/4" conduit knockouts provided at 90 degree intervals - BGRE84