Jandy CCL-340, CV-340 Compatible Filter Cartridge - Pack of 4 drain-type_Frame & Cover The Maximum has 6-inch disks

The Maximum has 6-inch disks and comes assembled

These are true readings of Free Chlorine and not approximate values derived from ORP readings

Phenol Red

This is a Waterway Plastics Pressure Gauge replacement with a back mount and reads 0 to 60 PSI

Jandy CCL-340, CV-340 Compatible Filter Cartridge - Pack of 4 drain-type_Frame & Cover The Maximum has 6-inch disksThe 4 Pack of Hurricane HF7459 04 Cartridge Filters are compatible with Jandy Industries CCL 340, CV 340, and other compatible models. They are identical to Pleatco PJAN85, Unicel C 7459, and Filbur FC 0800. The original manufacturer's names and part numbers are for reference only. Hurricane's advanced point bond filter media has tighter filtration capabilities than trilobal media material or classic nonwoven media. That means a superior filtration of