2 Pack X8788 MERV 16 Filter 20x26x5, Compatible with Pureair PCO20-28 Air Cleaner and Lennox X8788 Filter is up for auction in Home & Kitchen. The current bid is $2.00, 98% below the $130.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.