Als Liner Heat and Noise Reducer 220x157 Al’s Liner Heat and Noise Reducer Keeps Vehicle Interiors Cool in the Summer and Warm in the WinterAl’s Liner Heat and Noise Reducer (HNR) produces a comfortable atmosphere in vehicle interiors. HNR can be applied to interior roof, walls and floor to reflect exterior temperatures by 45°F or more. The coating can withstand temperatures up to 500°F. Al’s HNR is a proprietary blend of latex synthetic polymers, acrylic, PVA and vinyl styrene that’s reinforced with ceramic micro spheres to provide incredible insulation, heat reflection and sound deadening properties. HNR is produced from recycled materials. Read More→