Al’s Heat and Noise Reducer (HNR) is a proprietary blend of latex synthetic polymers. It contains acrylic, PVA and vinyl styrene reinforced with ceramic microspheres that provide incredible insulation, heat reflection and sound deadening properties. HNR can withstand up to 500°F and reflects exterior temperatures by 45°F or more and reflects up to 36 percent of solar energy. It provides a heat shield for floor pans, firewalls, roofs and much more. Visit www.alsliner.com.