Two-Component Fire Retardant Polyurethane Foam Kit 600 Board Feet Portable, disposable and self-contained with color-coded, pre-connected hoses. 1.75 PCF FR ICC Evaluation Services ESR-3052. Reduces energy loss by as much as 40%. High R-value. Fire Retardant Formula Foam Kit 600 covers up to 600 square feet at 1 inch thick. Compatible with all fiber insulation systems including cellulose, fiberglass and rockwool Expands to fill smallest to largest gaps, cracks and holes, reducing air exchanges