Purolator® Synthetic Automatic Roll Filters Are For Use In Primary Roll Filter Machines.
Used for use in industrial facilities, commercial buildings, government installations, schools and universities. Made using high loft bulk fibers of post consumer recycled polyester fibers. 1/2" Thick Filters are recommended where air velocities are 500 FPM and dirt loads are normal. 1" Thick Standard Filters are used for where dirt loads are heavy and velocities are above normal. 1" Thick High Density Filters have a heavy weight polyester synthetic media for industrial applications. Scrim net backing for extreme conditions. 2" Thick Filters is a resilient blanket with high dust holding power. UL listed.