2 Frigidaire Pure Air Ultra Refrigerator Air Filters. Compare to Part # PAULTRA. It is recommended that you change this filter every 6 months. This filter prevents odors that build up in your fridge and leaves your fridge smelling fresh! This is a generic product designed and engineered in the United States by Crucial Air. This is not a Frigidaire OEM product and is not covered under any Frigidaire manufacturer''s warranty. Please check your manufacturers warranty with regard to the use of non-OEM parts. Crucial Air provides no warranty or guarantee with regard to the product or its compatibility with your Frigidaire product. Any use of Crucial Air non-OEM products in your Frigidaire product is done at your own risk. The Frigidaire brand names and logos are the registered trademarks of their respective owners. Any use of the Frigidaire brand name or model designation for this product is made solely for purposes of demonstrating compatibility.