Our UL and CSA Listed Box Extenders extend set back metallic or nonmetallic electrical boxes up to 1-1/2".Made of heavy-duty, non-conductive plastic, they level and support wiring devices. And, they prevent arcing by forming a barrier between a metal box and metal side screws on the device.Try them all for the safe and easy way to obtain UL or CSA Listed installations in set back boxes.
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BE3-10 Specifications PDF
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