Unicel 4CH-950 | 25 Sq. Ft. Replacement Filter Cartridge | 12″ with SAE Thread

Description

Unicel 4000 Series 25 Sq. Ft. Replacement Filter Cartridge

The Unicel 4CH-950 is a precision-engineered replacement filter cartridge delivering 25 square feet of filtration area in a compact 12″ profile. Built with 139 pleats of 3 oz. Reemay 2033 spun-bond polyester media, it captures fine particulates while sustaining strong flow rates — purpose-built for demanding spa filtration applications. The closed top with semi-circular handle makes removal clean and straightforward; the 1-1/4″ SAE-threaded bottom seats securely for leak-free performance.

⚠️ IMPORTANT: Dimension One Vision® Sanitizing System — Two-Filter Setup
The Dimension One Vision® Sanitizing System uses two separate filters: this inner cartridge (OEM 1561-04) plus a larger outer filter sold separately. Purchasing only this cartridge will not complete a full filter service. Confirm your spa’s filter configuration in your owner’s manual before ordering.

Specifications

Fits Into:

(This is not an exhaustive list.)

Pro Tip: The 1-1/4″ SAE thread is a fine thread standard — it is not interchangeable with standard MPT (male pipe thread) fittings. Always match your existing cartridge’s thread type, length, and outer diameter before ordering.