Check the listing for details. STI SSB24 Firestop Pillow,Red,Intumescent 3PA72. Condition: New. Listed at 21.20 USD. Firestop Pillow, Fire Rating 4 hr, Fire Resistance Type Intumescent, Firestop Type Pillow, Interlocking No, Overall Height 4 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 STI(R) SpecSeal(R) SSB Firestop Pillows easily compress and conform around any penetrant. Equally suited for new or existing conditions, SpecSeal(R) Pillows make short work of even the most complex through-penetration firestop conditions.• Tested in a wide range of construction types and configurations• Easily i.