Firestop Pillow Fire Rating 4 hr Fire Resistance Type Intumescent Firestop Type Pillow Interlocking No Overall Height 6 in Overall Length 9 in Overall Width 2 in Color Red Features Installs from a Single Side Re-Enterable Allowing for Future Work in Previously Sealed Openings Tested in a Wide Range of Construction Types and Configurations For Material Type Concrete Gypsum For Use On Busway Cable Trays Cables Duct Pipe Maximum Service Temperature 130 Degrees F