4" Corrosion Resistant HEPA Filters for Pulp & Paper Corrosion Resistant hepa filters for 4" applications Typical Lifespan: 10,000-50,000 hours This Part in Other Industries Aerospace Automotive Manufacturing Chemical Processing Food & Beverage Marine Mining Oil & Gas Pharmaceutical Power Generation Steel & Metals Water & Wastewater Related Resources View All HEPA Filters More HEPA Filters for Pulp & Paper