The Unicel C-6350 delivers 50 square feet of filtration built on Unicel’s 3 oz Reemay® polyester media. Built to meet or exceed OEM specifications, it’s the kind of replacement that performs like the original — and often outlasts it.
Filtration is the quiet backbone of clean spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is what removes all of it before it clouds the water, feeds bacteria, or coats your plumbing. When a filter is worn or clogged, the effects spread everywhere: dull water, higher chemical use, softer jets, and a pump and heater straining against restricted flow.
What separates a Unicel from a bargain cartridge is what it’s built from. The Reemay media uses trilobal fibers — three-lobed rather than round — which pack substantially more surface area into the same material, balancing dirt-holding capacity, cleanability, and chemical resistance. Add chemical-resistant end caps with an exact OEM fit, uniform pleat folds that keep flow strong and pressure loss low, and a solid core that holds its shape under pressure, and you get a cartridge that performs through cleaning after cleaning. Made in the USA, backed by more than 45 years of filter-cartridge expertise.
Pro Tip: Match the part number before you order, not just the square footage. Plenty of cartridges share a 50 sq ft rating but differ in diameter, length, and end-cap style — and a filter that’s the right area but the wrong shape won’t seal properly, letting unfiltered water bypass the media entirely. Pull your current cartridge, read the number printed on it, and match that.
Brand
UNICEL®
