Touch N Seal 4004520015 U2-15 Spray Closed Cell DIY Foam Insulation Kit 15 BF Yields 15 board feet or 15 square feet using a 1" layer (1 board foot = 12" x 12" x 1"), 1.25 cubic Portable, disposable, self-contained units, Fast set-up, Upright assembly High closed cell content of cured foam makes it suitable as a general sealant to prevent air leakage Foam expands 30 times, dries in less than 1 minute, R-Value (ASTM C-518): 7.12 per inch No CFCs or urea formaldehyde, Includes illustrated instructions