DEI Boom Mat Under Carpet 1" x 54" Pack # DEI-050102DEI Boom Mat Under Carpet 1" x 54" Pack # DEI 050102 Boom Mat Under Carpet (UC) is a two layer sound deadening and insulation mat that helps maintain a quality ride experience by preventing unwanted noise in the interior of your vehicle. This acoustic material also insulates vehicles, keeping them cooler in the heat and warmer in the cold. UC consists of a flexible one pound per square foot mass loaded barrier (top layer) and quality acoustical marine