The DEI Boom Mat Sound Damping and Insulation Kit for Sprinter Vans is available for both short wheel base (No. 050400) and long wheel base (No. 050401) vehicles to help reduce noise and improve heat retention. The short base kit includes 250 sq. ft. of Boom Mat D-Mat thermal acoustic insulation, Boom Mat damping material, and Boom Mat Hi-Temp Spray adhesive; enough to cover the side walls and ceiling. The long base kit provides 350 sq. ft. of insulation. DEI also offers a floor insulation kit for either short or long base vehicles to help reduce road noise.