SYSTEM SENSOR SBBCWL CEILING SPEAKER SURFACE MOUNT BACK BOX WHITE

System Sensor SBBCWL Surface Mount Back Box

System Sensor SBBR Wall Mount Surface-Mount Back Box - Red

SYSTEM SENSOR WHITE WALL / SURFACE MOUNT BACK BOX SBBW, 5 KNOCKOUTS, NIB

System Sensor SBBSPR- Wall Surface Mount Back Box Speakers/Strobes, Red

System Sensor SpectrAlert Advance SPWV Wall Speaker White Hi Vol

System Sensor SBBWL Surface Wall-Mount Back Box White

System Sensor SWK with mounting back plate. NO WEATHERPROOF BACK BOX