This two component polyurethane spray foam system is intended for professional use as a foam insulating sealant to fill cavities, wall and floor penetrations, cracks, and expansion joints. Chemical curing allows the two-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 12 kit includes: Iso (A) can, Polyol (B) can, thumb controlled spray dispenser with hoses, shoulder strap assembly, 2 cone white spray nozzles (187918). Great for small jobs, the yield is 12 board ft., 1 cu. ft.