HILTI Firestop box insert 4" x 4", 50 PACK, NEWHILTI Firestop box insert 4" x 4", 50 PACK, NEW, FAST SHIPPING Features Three sizes designed to fit common outlet box applications Integrated adhesive for fast and simple installation Installs inside outlet boxes after the wall has been finished Applied by hand. No special tools required US Patent No. 6,252,167 Applications An intumescent box insert designed to help protect electrical outlet boxes For common outlet box sizes Install Firestop Insert
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HILTI Firestop box insert 4" x 4", 50 PACK, NEW, FAST SHIPPING
Features
Three sizes designed to fit common outlet box applications
Integrated adhesive for fast and simple installation
Installs inside outlet boxes after the wall has been finished
Applied by hand. No special tools required
US Patent No. 6,252,167
Applications
An intumescent box insert designed to help protect electrical outlet boxes