Rectorseal 66369 4-3/8-Inch by 4-3/8-Inch Pad Metacaulk Box Guard

Product Description Metacaulk Box Guard is a highly in tumescent, fire-rated pad for use in electrical boxes. When complying with the 24-Inch rule, it is inserted on the inside back wall of an electrical box. From the Manufacturer Metacaulk Box Guard is a highly in tumescent, fire-rated pad for use in electrical boxes. When complying with the 24-Inch rule, it is inserted on the inside back wall of an electrical box.

• It is a highly intumescent, fire-rated pad for use in electrical boxes
• When exposed to fire, it will expand forming a char that will seal off the opening and prevent the spread of flames
• It also limits the temperature rise on the unexposed surfaces
• A labor saving, economical alternative to putty pads
• Great for retrofit jobs