SM810A SERIES: 8" 15W Sound Masking SpeakerSound masking speaker series SM810A features an 8 inch 15W dual cone driver with 10 oz. magnet. Includes factory wired transformer, 760 cu. in. backbox with grille, SG handibox cover with knockouts, 1 2 in. Romex connector and externally accessible input leads. Black or white housing. Optional factory mounted bridge rails. UL Listed. Model No. Driver Transformer Backbox Grille Mounting SM810A 8 in. 15W (810) 70V 760 cu. in., black Hangers SM810A BR 8