3M Spec Sheet Product Brochure Technical Data Sheet Item Codes: FW1.5 Fire Wrap Grease Duct Insul 1.5″ x 24″ x 25’/Bx FW12SEAL-SS Fire Wrap 1/2″ SS Wing Seals [100/Bag] FW12STRAP-SS Fire Wrap 1/2″ Stainless Strapping for Fire Wrap in 200 foot rolls 1.5” Duct Insulation is specifically designed to offer flexible enclosure for 1 and 2 hour rated kitchen and grease duct exhaust. To meet NFPA requirements grease duct must get 2 layers, which will give zero clearance to combustibles.
