This MSfilter Paint Arrestor Roll fits into the following: Standard Viskon-Aire Paint Booth cross draft and down draft spray exhaust systems. This Paint Arrestor Roll is composed of a layer of spun fiberglass (blue in color on air entry side) with a thin fiberglass backing (white in color on air exiting side). This paint arrestor filter also provides superior overspray holding capacity and can be used in a waterborne paint environment. This Paint Arrestor Roll provides efficiency across a wide range of paint materials and is EPA 40 CFR Part 63 Compliant. The progressive density design ensures proper "depth loading" by allowing the air entry layer to capture larger overspray particles, while the fine air exiting layer captures smaller overspray particles.