Super-Pro XtremeBlue A1 C4025/C4030 Filter Cartridge, 4-pack | X15-ULT-A1-M-Q4 Commercial which is the fastest way

which is the fastest way to confirm the correct replacement

Pentair Part Number 473731Z Part Name Capacitor with Bracket Quantity Included Each (1 capacitor with bracket) Compatible Models UltraTemp Models 70

confirm the color of your existing ring against your pool surface

If your WhisperFlo or IntelliFlo VS pump is Black/Gray

Super-Pro XtremeBlue A1 C4025/C4030 Filter Cartridge, 4-pack | X15-ULT-A1-M-Q4 Commercial which is the fastest waySuper Pro aftermarket filter cartridge replacement for use with the Hayward C4025 & C4030 cartridge filters. This is a 4 pack, for full filter servicing. For a single filter cartridge, see here.