The Tramontina Type C 4-inch Fixed Condulet with NPT Thread and Cover and Electrostatic Coating is very efficient and will help maintain the high quality of your electrical installations. It is made of aluminum for better protection of the wiring, which gives it higher mechanical and corrosion resistance. It can be installed in a simple way in indoor or outdoor environments, without needing to break walls. Your electrical projects turn out much better with Tramontina!