Fire Barrier Sealant Application Method Caulk Gun Color Gray Container Size 20 oz Container Type Cartridge Drying Time 60 min Expansion Temperature Not Applicable Fire Rating 4 hr Firestop Type Sealant/Caulk Flame Spread Index 5 Flame Spread Rating Class A For Material Type All Common Construction Surfaces For Use On Blank opening bottom of wall busway cable tray floor to floor floor to wall head of wall metal pipe multiple penetrants wall to wall Formulation Silicone