This is a 30 Inch Wide KoolMat that is sold by the running foot. It is widely used by NASCAR teams this material is easy to install very flexible and follows the contours of your floor and firewall. KoolMat is a closed cell fiberglass material cured to a silicon top layer. The white fiberglass bottom layer reflects heat up to 1200 degrees. The layers are fused together at 1000 degrees which assures no breakdown from extreme exhaust system heat. It is weather and mildew resistant, KoolMat delivers a 23 decibel reduction in sound transfer inside the car when properly installed. Will not crack dry out or wear like other foil-faced products. KoolMat is sold by the foot in 30 Inch wide rolls.