Free Shipping on Orders $50+

Hot Spring Tri-X Filter Cartridge

  • $71.50

Hot Springs Tri-X 73178 Filter Cartridge


The Tri-X 73178 replacement filter is a factory-original filter for Hot Spring Spas. With 2x the filtration efficiency, the Tri-X 73178 improves water clarity, requires less cleaning and has an estimated 5-year lifespan.

Made by Watkins Mfg., the Tri-X 73178 is a factory original replacement filter for Hot Spring spas. Tri-X filters are made with ceramic pleats and are designed to filter twice the water per minute as a standard paper filter. The Tri-X has a life expectancy of up to 5 years if maintained properly.

Filter Specs

  • Filtration Sq Ft: 65
  • Outer Diameter: 6"
  • Length: 10-1/2"
  • Top: Open 1-15/16"
  • Bottom: Open 1-15/16"
  • Pleat Count: TRI-X
  • Media Weight: Ceramic

Recommend For

Hot Spring Spas

**For hot tub compatibility please refer to the table in the photo section**

If you are not sure about the filter that you need, please contact us through our chat or at


Watkins Wellness®