FitCheckrCompatibility guide
Pool and Spa Filter Cartridge Compatibility Checklist
How to match Intex, Bestway, inflatable spa, and pool pump cartridges by type letter, pump model, and dimensions.
Pool and spa filter cartridges should be matched by pump model, cartridge type letter, height, diameter, and thread or hole pattern. Intex Type A/C pool cartridges are not the same as Intex Type S1 spa cartridges, and Bestway Type VI cartridges should be matched to the Lay-Z-Spa pump and cartridge dimensions.