Product catalogs for Cromax, Standox, Spies Hecker, Nason, Axalta Commercial Coatings, and Axalta Industrial Coatings. Paint and coatings for cars, trucks, buses, trains, equipment and custom cars. U-Pol High #5 - High Build Aerosol Primers is a high-quality primer/filler that you can use to fill uneven surfaces. You can use this primer for use on various surfaces such as fully cured paint, polyester body fillers, and F.R.P. Key Features of the U-Pol High #5 - High Build Aerosol Primers: Fast-drying formula for easy sanding U-POL is a World leader in automotive refinishing products specializing in fillers, coatings, aerosols, adhesives and paint related products.