HQRP 4-Pack Foam Sponge Filter Media for Laguna Pressure-Flo 1400/5000 UVC (PT1502); PT1503 PT-1503 Replacement Coaster HQRP 4-Pack Foam Filter Kit + HQRP Coaster; Compatible with Laguna Pressure-Flo 1400 / 5000; Diameter 7.3" / 185 mm; 2 weeks DOA replacement warranty!