Clean, easy, and affordable alternative to foam or putty firestop products for single cable penetration! Just drill a hole in rated gypsum board walls and STI Ready® Firestop Grommets snap over cables to fit directly inside. The product's soft foam inner core creates a tight smoke-seal. Can be used for single-sided (membrane) penetration or through-penetration (back-to-back). Exceptional flame and heat resistance from Ultem® premium grade plenum-rated polymer mold.
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