Metacaulk Cover Guard is a 1-piece fire-rated gasket for meeting the "24-in rule" in electrical boxes. When exposed to heat, intumescent material expands/forms a char to seal opening, prevent flame spread & limit heat transfer to unexposed areas.
Mounted on inside of cover plate & installed simultaneously- covers the opening & provides necessary fire protection.
Easy to install- applied by hand, does not take up volume in the electrical box & a labor-saving replacement for putty pads in normal applications
Cost Effective and Great for safe retrofit applications
Use when electrical boxes are installed in rated walls facing opposite directions & horizontally separated by less than 24". Can also be used as a solution for standard electrical boxes when the 100 square inch rule is violated.