Viking USP 3% SFFF Foam Concentrate and 360° Model GN202 Grate Nozzle Viking's FM Approved and UL Listed SFFF Low Expansion Foam Offering FM Approved and UL Listed Viking USP 3% SFFF is a low expansion Synthetic Fluorine Free Fixed Foam concentrate for Hydrocarbon and Polar Solvent applications. The 360° Model GN202 Grate Nozzle is FM Approved to protect aircraft hangars and helipads. Viking also provides Upgrade Kits that retrofit Model GN200 Grate Nozzles for SFFF foam compatibility! Viking offers these products and everything else you need to complete your foam package - such as wide range proportioners, bladder tanks, Viking sprinklers, and much more. Learn more on our website at vikinggroupinc.com. The easiest way to calculate low expansion foam needs is the LoEx Foam Estimator! Estimate concentrate and more, and submit an order to customer service at webtools.vikingcorp.com/fff.http://www.vikinggroupinc.com http://webtools.vikingcorp.com/fff