Rectorseal 66367 Metacaulk Box Guard Double Pad

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.