Touch n' Seal Spray Foam Insulation Kit 4004520015 DIY - 15 BF (Quantity of 3 Kits) Foam expands 30 times, dries in less than 1 minute, R-Value (ASTM C-518): 7.12 per inch YIELD: Each Kit is 15 board foot that covers up to 15 square feet at 1 inch thick. Portable, disposable, self-contained units Use all contents within 30 days of initial dispensing QUANTITY: 3 FULL Kits