... large diameter, coreless, single open ended, pleated cartridge with an inside to outside flow pattern. The filter’s ... patented crescent-shaped pleat geometry, combined with its large 6"/ 152 mm diameter, reduces the number ... Operating Conditions Maximum Operating Temperature: 82°C replacement part number: HFU620, HFU640, HFU660 replacement cartridge grade: UY020,UY045,UY100,UY200, ...