Twin Jet has been updated with a hydrofluoroolefin (HFO) propellant. HFO Propellants have low Global Warming Potential (GWP) and are Non-Ozone Depleting (ODP), providing a sustainable alternative to products made with hydrofluorocarbons (HFC). Twin Jet HFO adhesive has the same great performance you’ve come to rely on and meets current regulations in the U.S. and Canada. This product is a two-part, low-rise, foam adhesive, designed for attachment of Firestone insulation and Firestone XR membranes to approved substrates, per Firestone specifications. This reliable, adhesive requires no special equipment, is easy-to-use, and capable of coverage up to 35 squares/set when dispensed in bead application. Twin Jet HFO offers fast and easy set up and shut down with each set containing everything you need to apply the product, including the hose/gun, mix tips, and extension tubes.