Medium Output Ceiling Speaker Assembly. Complete Assembly Includes Backcan, Grille and Tile Rails. Very Wide 150° Coverage. Shallow 100 mm (4 in) Depth. 70V/100V Input Transformers with Taps at 25W and 12W (Plus 6W at 70V Only). Priced as Each, Packed as Pairs. Master Pack Quantity: 8 Pieces.