The Waterway Plastics 550-0231 (550-0621) is a filter lid and lock-ring assembly for Pro Clean 125 and 150 sq. ft. cartridge filters. It features a new style lid with an old style lock ring, providing an easy-to-install solution that fits both cartridges perfectly. This high-quality filter lid and lock ring assembly ensures your pool always stays clean and safe. It also helps protect your pool equipment from damage, reducing potential costs in the long run.

• New style lid with old style lock ring
• Filter lid and lock-ring assembly for pro clean 125 and 150 sq. ft. cartridge filter
• Easy to install
• Made from high durable materials

Fitment guidelines:
For use with Pro Clean 125 and 150 sq. ft. cartridge filters

Additional information:
Alternate Part Number - WW5500621B