Al's Liner Ceramic Insulation Heat and Noise Reducer- 1 Gallon - Sound Control and Deadener for Cars, Trucks and Audio Noise (HNR) Description Al's HNR, Heat and Noise Reducer, is a proprietary blend of latex synthetic polymers. It contains acrylic, PVA, and Vinyl Styrene and is reinforced with ceramic micro spheres that provide incredible insulation, heat reflection, and sound deadening properties. HNR can withstand up to 500°F and reflects exterior temperatures y 45°F or more. HNR can be applied to virtually any substrate with minimal prep. It works just like latex paint. it is excellent for interior automotive applications of all types. Al's HNR keeps your vehicle or boat cool in the summer and warm in the winter. Features: Blocks up to 35% of exterior heat/solar energy from transferring through substrate Only requires 31 mils (31/1000 of an inch) wet coat to achieve maximum heat reflection- Covers up to 44 Sq. Ft. per gallon Provide incredible insulation, heat reflection and sound deadening properties Can withstand up to 500F and reflects exterior temperatures by 45F or more Can be applied with spray guns, brushes, and rollers- Cleanup is easy, just add soap and water Product Details: Manufacturer: ‎Al's Liner Brand: ‎Al's Liner Model: ‎ALS-HNR Item Weight: ‎10 pounds Product Dimensions: ‎8 x 8 x 10 inches Item model number: ‎ALS-HNR Is Discontinued By Manufacturer: ‎No Exterior: ‎Smooth Manufacturer Part Number: ‎ALS-HNR OEM Part Number: ‎FKPMALS-HNR Date First Available: October 21, 2011