RPAK-810-72: 8" Dual Cone (In-Ceiling Speakers)New RPAK One Box System Pairs with Mtg Accessories For general purpose paging and distributed music, this ceiling speaker kit includes two each: 8 in. 15W dual cone driver (No. 810), factory wired transformer (No. TLM 572), steel backbox (No. 8XD4), white grille (No. WB 8), and T bridge (No. LBS8 R1). Model No. Driver Transformer Backbox Grille RPAK 810 72 (2) 810 (2) TLM 572 (2) 8XD4 (2) WB 8 Data Sheet