First4spares Size 2 Filter Cartridges Made to fit Bestway Swimming Pool 530/800 gal/hour filter Flowclear Pump, Size 4.2 x 5.4 Inches (Pack of 4) : Amazon.co.uk: Garden & Outdoors
Amazon.com : UVGS for Intex Krystal Clear Model 601 Pool Filter Cartridges Type H Pool Replacement Filter Pump Cartridge for Intex Spa 28601/28602 Filter Pumps (2PCS) : Patio, Lawn & Garden