Talkback Paging Horn GRAY- Paging horn- Talkback- Easy Omni-Lock I-Beam clamp mounting system- Weather resistant- Indoor/outdoor- Stainless steel hardware- Built-in amplifier- Built-in volume control- 360* rotation- Shatter-proof base fits seven standard electrical gang boxes- Gray- Weight: 4.4lbs- Dimensions: 7.38"H x 10"W x 10.4"D- VALCOM POWER UNITS (0)VCV1048CGY