Unicel C-6430 | 30 sq ft Hot Spring Spa Filter Best Selling Fireplaces & Stoves An inside fit front for

An inside fit front for the Heatilator Caliber 36

18% potassium peroxymonosulfate (DuPont Oxone) in a pH-buffered carrier

Made of high quality components and materials

Pro Tip: Enzyme isn't a replacement for sanitizer or shock — it's a complement

Unicel C-6430 | 30 sq ft Hot Spring Spa Filter Best Selling Fireplaces & Stoves An inside fit front forThe Unicel C 6430 delivers 30 square feet of filtration across 124 pleats of heavyweight 4 oz Reemay polyester media. Built to meet or exceed OEM specifications, it's a direct replacement for the Hot Spring and Watkins cartridges used across a wide range of spas. 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