The Carlon SC100RR One-gang low-voltage Old-Work Bracket is specially designed for the installation of low-voltage devices such as cable television, data communications or telephone jacks in an existing wall. The backless design accommodates the space and bend-radius requirements of coaxial or data/communication cables and eliminates the need for metal plates, lags or screws. Non-metallic polyvinyl chloride resists rust, corrosion, impact and the damaging effects of sunlight. Non-metallicCut-in bracketsOld Work Low Voltage BracketRectagular flange for faster/ easier installationShallow bracket - Less material, easier to work with.For use wth low voltage class 2 devices only