STI Firestop EP44 Powershield Electrical Box Insert for 4 Square Box 3-3/4″ x 3-3/4″ x 1/8″ (1/each)

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

• Tested in boxes up to 4-1/2 in. x 14 in. x 2-1/2 in.
• Suitable for Steel and Plastic Face Plates
• Easily preinstalls before shipping to the jobsite
• Eliminates the need for Putty

Data Sheet