About This

Durable Material: These electrical outlet box extenders are made of high temperature resistant 94VO rated flame retardant PA material, finely processed, good flame retardant performance and reliable and long-lasting.
Main Function: These electrical outlet box extender for porable electrical boxes and 4-inch square electrical boxes with gypsum rings is used to extend electrical boxes up to 1-1/2 inches. Self-leveling support for outlets, switches, GFCIs, receptacles, and other standard equipment.
Feature:These electrical outlet box extenders can be easy to install. They can ensure a safe and reliable installation. Once these are installed, the non-metallic sidewalls completely enclose the unit, creating an insulating barrier.
Package Content: 5-10 pcs extending electrical boxes and matching screws. Which can be combined into two sets of electrical outlet box extenders.The extender box fits standard US electrical boxes ranging from 2 1/8 inches to 4 inches in width and 1 1/2 inches to 2 1/8 inches in depth.
Quality Assurance: These electrical outlet box extenders have ETL certification. You can use them With confidence.