When a device box comes up short on depth during a retrofit or renovation, the Hubbell® Device Box Extension is the fast, code-friendly fix that professional electricians and contractors rely on. Designed to fit any standard 2 in. x 3 in. device box, this extension adjusts up to 7/8 in. (0.88 in.) of additional depth — giving you the clearance you need to accommodate deeper devices, extra conductors, or modern smart switches without tearing out the wall. Mounting screws are included for a complete installation right out of the box, saving time on the job site and keeping your rough-in schedule on track. Whether you're upgrading a panel room, finishing a commercial tenant improvement, or tackling a residential reno, this extension is a practical addition to any electrician's kit.

Specifications