Handy boxes are manufactured from durable pre-galvanized steel and are designed to house and protect electrical wiring, switches and receptacles. All steel boxes are UL listed and acceptable for use in 2-hour fire rated walls. Device mounting holes are pre-tapped to accept 6-32 device screws. 2-1/8 in. DeepWelded with Conduit KO'sRACO® Handy boxes, also called utility boxes, are used for convenience outlets, switch boxes or small junction boxes