|FSB ULTRA™ is the latest innovation for grease duct enclosures and ventilation air duct protection. FSB ULTRA™ weighs in at just 8 tenths of a pound per square foot, making it the lightest, most flexible duct protection blanket available. At 1½” thick it provides a low profile, 2-hour fire protection with zero clearance to combustibles
anywhere on the wrap. This makes FSB ULTRA™ the thinnest blanket on the market for duct sizes up to
52” x 52”.
The core material of FSB ULTRA™ is composed of long strand, high strength, bio-soluble fibers needled into a tight blanket with superior handling properties and rated for operating temperatures as high as 2300ºF without becoming brittle or shrinking over the lifetime of the blanket. The scrim-reinforced facing is the latest state-of-the-art product specifically developed for extreme temperatures and superior puncture resistance, while still maintaining excellent handling characteristics. The facing is adhered to the fiber blanket with a full surface coating of proprietary high temperature adhesive preventing de-lamination during installation and normal duct operating temperatures. FSB ULTRA™ is available totally encapsulated or with foil facing on one side.
FSB ULTRA™ meets NFPA Standard 96 and is classified by Omega Point Laboratories.