National Filters (NFI) is an ISO 9001:2015 certified industrial filtration manufacturer located in Harbor Beach, MI. NFI manufactures hydraulic, lubrication, marine engine air, wet/dry vac and dental filtration under the National Filters brand. Customers can cross reference, check on stock levels, view discounted pricing, view and print technical data sheets, compile a quote request or order direct from our website at www.nationalfilters.com. NFI also runs multiple contract manufacturing lines manufacturing custom filtration products for over 60 different OEM and competitive filter companies.