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Easy to install - adheres to back of electrical box
Cost-effective and great for retrofit jobs
Highly intumescent firestop material
Non-conductive, dielectric breakdown voltage 22 V/mil (ASTM D 149)
A labor saving, economical alternative to putty pads
Marketing Information
metacaulk® Box Guard™ is a 1 component fire-rated pad for use in electrical boxes. When exposed to fire, it will expand forming a char that seals the opening, prevents spread of flames and limits temperature rise on unexposed surfaces.
metacaulk® Box Guard™ 66367 Fire Stop Pad, 8 in W, 4 in L, Black