Valcom 2FTx2FT lay-in ceiling speakers with backbox- Lightweight – weighs slightly more than a ceiling tile- Inconspicuous front accessible volume control one-way only- Save time, effort and money – get on and off the job quickly- Durable white acrylic baked enamel finish- No cutting tiles, no broken tiles, no mess- Excellent music and voice quality- Integral backbox meets or exceeds ASTM e84 flame and smoke test with 3 hour burn rating UL 181