Unicel Replacement Filter Cartridge 25 sq. ft. | Freeflow Spas CLX | 4CH-23 C7430 This formulation contains copper and

This formulation contains copper and penetrating agents to kill and prevent even the most deeply-rooted black algae cells and other resistant forms

One quart removes up to 4

It is engineered for filter housings that retain the cartridge via an internal manifold and base plate — no center post or standpipe is used

The Hayward CX200RE original measures approximately 4-3/4" OD × 11-13/16" length

reliable debris capture

Unicel Replacement Filter Cartridge 25 sq. ft. | Freeflow Spas CLX | 4CH-23 C7430 This formulation contains copper andThe Unicel 4CH 23 is a 25 sq. ft. replacement filter cartridge precision engineered for Freeflow Spas CLX systems. With 212 pleats of 3 oz. Reemay 2033 spunbond polyester media packed into a compact 6 5 8" length, it delivers consistent water clarity and reliable flow in top load spa filter housings. The closed top and 1 1 2" MPT bottom ensure a secure, leak free fit with no adapters required. Specifications Filter Area 25 sq. ft. Length 6 5 8" Outer