DEI All-In-One Thermal & Acoustic Interior Kit - Small/Medium VehiclesTake the guesswork out of thermal and acoustic control All in one part number! Introducing a simple and cost effective, universal fit, sound deadening and thermal insulation kit. Each kit includes 25 sq. ft. of Boom Mat Damping Material, 27 sq. ft. of Under Carpet Lite and one 18 oz. can of Boom Mat Spray On to cover the interior of most small to medium size vehicles. Two step process for the best interior comfort from heat and noise.