Visual Sound, Inc. UL Listed Backbox-Recessed-4in Spkr, Steel, 12in Dia x 4in Deep UL-CP84

Lowell Manufacturing Company FIRE-PROTECTIVE Signaling (ULD-series & ULS series): (approved backbox for round grille assembly) provides clear signal for indoor alarm or voice communication in emergency warning systems or general public address in high-rise hotels, schools, apartment complexes and similar venues. Conforms to NFPA Standard 72A and is listed under UL1480 (5th edition) Fire Protective Signaling. Assembly includes speaker (15W dual voice coil), transformer (2 factory-wired dual-voltage transformers with DC blocking capacitor on 1 input, taps at 0.25, 0.5, 1, 2, 5W @ 70/25V), and grille (round or square steel, white). IMPORTANT: to maintain UL-Listing, assembly must be used with approved UL-Listed backbox and compatible control equipment. Order separately. Speaker size: 8