Metacaulk wrap strip is a highly intumescent firestop material strip mainly for plastic and insulated pipe application. When exposed to fire, it expands and forms a very hard char to seal the penetration stopping the passage of flames and hot gases. Easy to install, cost effective, and flexible. Fire strip has longer length, meaning less wasted material. 2"X18". Use only in tested configurations; highly intumescent; prevents passage of fire; excellent freeze thaw. No asbestos fillers. Easy to use design; no solvents or hazardous ingredients. Can use a sealant over the wrap strip as needed. 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. Metacaulk 1000 is a water-based, flexible, highly in tumescent sealant designed for use on metal, insulated, fiberglass and plastic pipes. It can also be used for top of the wall construction joints, as well as power and telephone cables. Sound Transmission Class (STC) rating 62, Tested in a UL 411 wall assembly/section to ASTM E90. Thousands of applications tested in accordance with ASTM E-814 for through penetration fire stops systems.