Features: • 99%+ removal efficiency standard Polyester: 5 microns, Paper: 2 microns • Temp (continuous): min -15° F ( -26° C) max 220° F (104° C) • Filter change out differential: 10"-15" in. H2O above initial delta P • Optimal sealing surface & design • Polyester - Reinforced with epoxy coated steel wire on both sides of cloth • Polyester - Washable - lukewarm water & mild detergent • Paper - Heavy duty industrial strength paper surrounded by heavy gauge galvanized expanded metal