The Powerblanket FBW15 Spray Foam FROTH PAK Warming Box, 120 Volt, 280 Watt, 2.33 Amp. The FBW15 Heated box quickly warms 200 board foot disposable spray foam kits. Ample room for storing hoses and guns prior to spraying. Spray at optimal temperatures year round. Single tank design. Powerblanket's line of heated enclosures are the most efficient method for warming and maintaining temperature in portable spray foam kits, boxes, cylinders, caulking and other temperature sensitive construction materials. The Spray Foam Industry now has a viable solution for heating their materials and protecting equipment from freezing temperatures in cold weather environments. UL/CSA/ETL Certified - U.S.A. (* Results are contingent upon boundary conditions).