FeaturesGraphite-based firestop is intumescent for thermal insulation (intumescent material effectively firestops non-metallic penetrants)Excellent flexibility for easy installation around through-penetrantsEasily rolled out, cut and shaped with common toolsRe-enterable material saves time and money after installationFirestop tested up to 4 hours in accordance with ASTM E 814 (UL 1479)Our 3M™ fire barrier ultra gs wrap strip is a quick, cost-effective firestop for non-metallic pipe, insulated pipe and combo penetrations in fire-rated wall, floor and floor/ceiling assembliesThis graphite-based intumescent firestop blocks flame, heat and toxic by-products of combustionRolled strip is easily cut to size and the flexible material conforms even to irregular-shaped penetrations