zhenx c-5374 plbs75 spa filter cartridge, compatible with unicel c-5374, fc-2971, 107092, 303433, 817-0015, r173600, plbs75, filter area: 75 sq. ft, leisure hot tub filter cartridge 2 pack is up for auction in Patio, Lawn & Garden. This item is in Good Condition. This auction has ended — similar items appear in live auctions regularly.