Metacaulk Firestop , Easy Application, Firestop, 6 in.x6 in.

Metacaulk Putty Pads to protect metal electrical cabinets, outlet boxes and mechanical cabinets, to maintain hourly rating of fire-rated walls with electrical outlet boxes and to reduce sound transmission. Moldable non-curing fire-rated material for through penetration firestop systems makes for easy installation. Firestop material applied by hand. Rated for up to 3 hours in accordance with the ASTM E 814, UL 1479 and ULC/CAN4-S115-M test standards. Firestop pads have sound transmission class STC Rating 60; only one pad thickness 1/8 in. needed for a 1-2hr. fire rating. No asbestos fillers. No special skills required to apply this firestop sealant. No mixing or additives needed. Expands when exposed to fire. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning HVAC/R, plumbing, electrical, and construction markets.