Purolator® Uni-Pak 85 Synthetic Bag Filters Are MERV 13 Rated.
These extended surface high capacity air filters are composed of individual dust holding pockets assembled in a metal support frame. Dual layered high loft synthetic media is formed using an ultrasonic perimeter seal. Frame is made of galvanized steel for high strength and rust resistance. Roll-formed header is a single piece U-channel with multiple bends for rigidity. Maximum operating temperature of 200°F. UL listed.