HandiFoam FR (HFO) low pressure spray polyurethane foam is a two-component system designed to fill and insulate large voids and surfaces. HandiFoam FR (HFO)’s excellent adhesion properties create a continuous air barrier which completes the building envelope, resulting in improved indoor air quality and lower heating and cooling costs.For optimum spray pattern and adhesion, use the ColorWise long cone nozzles (10 pack included in each kit)Dispensed using the patented Handi-Gun Dispensing Unit