Product Description A fire rated load bearing mortar to economically firestop large openings for through-penetrations in fire-rated walls and floors. When mixed with clean water to a suitable consistency it forms a rigid, gas tight, fire-resistant seal. Safe and simple to use- no special tools needed to mix or install. Workable in approximately forty-five minutes and can easily be cut, drilled, and resealed if future penetrants are needed. Fire rated mortar systems are rated for up to four hours and has been tested in accordance with ASTM E 814 (UL 1479) test standards. Created fire resistant seal. Non-sag adjustable consistancy with a two year shelf life. High yield per pound. Fire rated mortar is designed as a rapid hardending, easy to use gypsum cement compound that provides strength and fire resistance. 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. From the Manufacturer Metacaulk Fire-Rated Mortar has load bearing characteristics and is suitable for economically fire stopping large openings for through-penetrations in fire-rated walls and floors. It can be used with power cables, fiber optic or telephone cables, aluminum or steel cable trays, EMT, copper, steel or cast iron pipe.