Long Life, Dishwasher Safe, Ceramic Filter.

Hot Spring TRI-X Filter Cartridge fits the following Hot Spring Spas.

* Can be used in any spa pool that uses a C30 filter also.

• Aria
• Envoy
• Grandee
• Jetsetter
• Prodigy
• Propel
• Samoa
• Sovereign
• Square
• Stride
• Triangle
• Triumph
• Vanguard