Fireproofing product supplier since 1998

UL Classified Firestop Pillows


UL Firestop Pillows designed to firestop large open voids and openings made for penetrating items such as cables, cable trays, ductwork, pipes, and conduits.

■ 3 Hour Rated
■ Min Order: 1 Case
■ Qty Per Case:  10
■ Quantity Discounts On Five Or More


UL Classified Firestop Pillows

are used for sealing large open voids and openings in through wall penetrations in buildings. These firestop pillows are specifically designed to provide maximum protection against the spread of fire, making them an essential addition to any new construction or renovation project.

These Firestop Pillows are designed to seal large open voids and openings made for penetrating items such as, cable trays, ductwork, pipes, conduits, bus ducts, and HVAC ducts. Fire stopping pillows are UL tested to maintain up to a 3 hour rating and are soft, easily stackable, self-supporting and require no mesh or sealant.These UL Classified Firestop Pillows are designed to maintain a 3 hour fire rating in openings and voids. passage of flames and smoke.

These are also well suited for applications involving data, communications, power and other control cabling innerducts and trays. This type of fire protection offers easy retrofitting of cable installations without the need to damage the firestopping seal

With their intumescent properties, these Pillows expand when exposed to heat, creating a tight seal that effectively prevents the passage of flames and smoke.

Not only do these firestop pillows offer outstanding fire protection, but they are also incredibly easy to install. Simply place them in the void or opening and let their innovative design do the rest. They conform to irregular shapes and can be easily cut to fit any size requirement, ensuring a hassle-free installation process.

One of the key advantages of these firestop pillows is their versatility. They can be used in both horizontal and vertical applications, making them suitable for a wide range of construction projects. Their lightweight and compact design also ensure that they won’t take up valuable space in your installations.

When it comes to safety, there’s no room for compromise. That’s why these UL Classified Firestop Pillows are rigorously tested and certified to meet the highest industry standards. You can have peace of mind knowing that your building is equipped with reliable fire protection measures.

Don’t leave the safety of your building to chance. Invest in the UL Classified Firestop Pillows today and ensure that your construction or renovation project meets all necessary fire safety regulations. With their exceptional performance and ease of installation, these firestop pillows are the smart choice for any discerning builder or contractor.


 ASTM-E814 (UL 1479)
■ UL Classified
■ Download TDS

UL Classified Firestop Pillows Features:

■ 3-hour fire rating
■ 2” x 9” x 6” size
■ Intumescent
■ Ready-to-use
■ Easy installation
■ Economical
■ Lightweight
■ Self-supporting
■ No wire mesh needed

*For filling small voids, see our UL Classified Firestop Caulk

** For through wall PVC pipes, see our UL Classified Pipe Collars

Weight 2 lbs
Dimensions 15 × 15 × 15 in
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