- S-521b Lay-in Ceiling Speaker W Backbox
- Valcom Ceiling Speaker
- 1' X 2'
- .25/70 Volt Operation
- Replaces Half Of A 2' X 2' Tile
- Inconspicuous Front Accessible Rotary Tap Volume Control
- Integral Backbox With 3 Hour Burn Rating
- Excellent Sound Quality
- Durable White Acrylic Baked Enamel Finish
- Builtin Amplifier
- Tbar Included
- Brand: Valcom
