Designed to install LOW VOLTAGE Class 2 ONLY! Install communications wiring without needing an electrical box. Permits the use of 3/4″ EMT. Available in single or double-gang models. Works with 1/2″ or 5/8″ drywall. Designed for communication low voltage conductor. Non-conductive, smooth plastic construction prevents damage to cable. CAT 6 listed. For communications, cable TV, computer wiring.