Unicel Hot Tub & Spa Filters

Shop Unicel replacement hot tub and spa filter cartridges by exact model number. Compare each product's listed dimensions, end caps, openings and connections with your existing cartridge before ordering.

Spa brand alone does not confirm fit. Check your current filter number and your spa owner's manual, or contact Red Rock Spas for help identifying the correct replacement.

Shop all hot tub filters · Learn when to clean and replace your spa filter