8” in-Ceiling Speaker for high-quality paging applications Low-cost design makes it ideal for projects requiring large quantities 25 & 70V transformer taps up to 5W Fits standard ceiling-speaker template (PC-671R and others). Perfect for retrofits. UL 1480 UUMW & UL 2043 plenum rated. Certified to work with emergency announcement systems. Unique “monocoque” design provides better structural integrity. Optional UL-rated HY-BC580U stackable back-can for use in ceiling plenums