SIN surface-mounting indoor backbox for SVT Series models mounts to any single or double-gang backbox for concealed conduit applications. CRS unit includes 1/2" conduit knockouts (three on each side; five on rear). Epoxy-finished surface. Dimensions: 4" SQ x 1 1/2" D (102 x 38mm). Weight is .7 lbs (.3 kg). Neutural Grey

• Available in Flush, Semi-Recessed, and Surface-Mounting Configurations
• Environment-Resistant Paging and Intercom Stations for Outdoor Installation Include Weatherproof Call/Signal Origination Switch
• Loudspeaker Provides Clear and Consistent Voice and Signal Transmission
• Power Handling Selection of 15 and 2 Watt Models Includes Optional 25 Volt Transformer to Meet Various Functional and Transmission Requirements
• Proven Performance Reliability of the Patented VT Series Environment-Resistant Compression Driver