Get the job done right with this 9-piece electrical kit that contains everything an electrician needs to flawlessly install and connect a thermostat with an electric radiant heating system in accordance with the National Electric Code. 4″ x 4” double-gang box 1⁄2” single-gang mud ring 1⁄2” x 6’ flexible metal conduit (25) 3/16″ or 5mm low-volt staples 1⁄2” set screw connector 1⁄2” EMT drive strap 5” cable protector3/8″ x 4″ black flex tube (2) 1⁄2” flexible metal conduit anti-short bushing *Always verify local code requirements for suitability and compliance before installing any electrical system.