SpecSeal® Power ShieldTM electrical box insert is a one-component pad for use in electrical switch or receptacle boxes. The intumescent insert has been designed to install inside the box, directly against the back wall. SpecSeal® Power Shield electrical box inserts expands a minimum 24 times its original size when exposed to high temperatures or flames.
Requiring no tools, SpecSeal® Power Shield electrical box inserts are conveniently sized to fit typical switch or outlet boxes and features an adhesive strip applied to the back of the pad to ensure adhesion to the back of an electrical box. SpecSeal Power Shield electrical box inserts are easily applied into an existing box with no mess or residue.