A professional use, 2 component polyurethane spray foam system. Typically used as a foam-insulating sealant to fill cavities, wall and floor penetrations, cracks, and expansion joints. Chemical curing allows 2 part polyurethane foam to be dispensed, expand, and become tack-free in seconds. Will skin over in 30-40 seconds and be completely cured in under 1 minute. Froth-Pak 180 kit includes: Iso (A) cylinder, Polyol (B) cylinder, 6 cone white spray nozzles (187918), 4 GG white spray nozzles (187915), 9' gun hose assembly (GHA), petroleum jelly packet. Froth-Pak 180 is great for bigger jobs; yield is 200 board ft., 16 cu. ft. 1.75 foam density. Class 1 rated.