- Valcom paging horn - 15 Watt - One way - Easy Omni-Lock I-Beam clamp mounting system - Weather resistant - Indoor/outdoor - Built-in amplifier - Built-in volume control - Stainless steel hardware - 360* rotation - Shatter-proof base fits seven standard electrical gang boxes - Beige - Weight:4.6lbs - Dimensions: 7.38"H x 10"W x 10.4"D - VALCOM POWER UNITS (15)