Metacaulk RS136 10.3 Oz. Fire Block/Draft Stop Brand_McCloskey Sides and trimmings are nickel

Sides and trimmings are nickel finished

1/2" iron pipe size connections

Made from proprietary steel and heat-treated to control hardness

The once a week formula and economy size means fewer bottles being thrown away in landfills each year

smooth corners

Metacaulk RS136 10.3 Oz. Fire Block/Draft Stop Brand_McCloskey Sides and trimmings are nickelRS136 is a fire block draft stop caulk is a general purpose, residential, acoustical fire block draft stop smoke seal caulk for electrical, plumbing, plastic pipe, and telephone communication system penetrations. Easy application with a conventional caulking gun with water clean up capabilities. For interior application. Tested in accordance with ASTM E136 for fire resistant materials.