3-3/4 in. x 3-3/4 in. STI EP Powershield Electrical Box Insert | STI-EP44

SpecSeal EP Powershield electrical box inserts install within steel electrical box directly against the back of the box. Power shield box inserts are equally suited for remediation as well as pre installation before the boxes have made it to the job site. Power shield box inserts incorporate pre-scored openings allowing for easy installation around ground lugs.

• Easy retrofit = can be used for boxes installed in existing walls
• Rapid expansion = closes off burning pipes quickly
• Easily pre-installs before shipping to the jobsite = saves time
• Eliminates the need for putty = cost and time effective