Filter Information Guide
**Please double-check your filter’s size and features before ordering**Model names and years are guidelines only, as designs have changed over time. If you need help finding the right fit, feel free to reach out to us.
4CH-949
4CH-949 is a 50 sq.ft. filter that features a small wavy handle on top and a threaded base. Screws into the filter housing with a black floating cage top.
Measures approximately 13 ¾" x 5".
Used in all Premium Series H2O Spas that are 2015 or newer including Apres Ski, Banff, Canyon, Columbia, Comox, Duet, Fraser, Hudson, Niagara, Okanagan, Olympia, Radium, Snowbird, Tofino, Vesuvius.
Also used in Contractor Series 321S (XP1S) and 321L (XP1L) models 2025 or newer and Passion Swim Spas.
C-6310
C-6310 filter is a large, 100 sq.ft. drop-in style filter with a hole at the top and bottom. Measures approximately 17 ¾" x 6 ½". Used in some older 90" x 90" Premium Series H2O Spas that are 2015 or older, including: Canyon, Fairmont, Niagara, Olympia, Vesuvius.
XP
XP Filter is a smaller filter with a small handle on the top and external threading on the bottom. Measures approximately 6" x 6" (excluding threading).
Used in all Contractor Series H2O Spas 321 and 322 DL (XP1DL and XP2DL) models, as well as 321S (XP1S) and 321L (XP1L) models from 2019-2024.
6CH-940
6CH-940 filter has a small handle on top and external threading on the bottom, and measures approximately 6" x 8¼" (excluding threading).
Fits all Recreation Series 110S and 110L (110V plug and play) H2O hot tubs.
C-4950
Swim Spa
C-4950 is a 50 sq.ft. drop in style filter with a hole on the top and bottom. Measures approximately 13¼" x 5". Used in some older Premium Series H2O Spas that are 2014 or older, including Après Ski, Atlantica, Banff, Comox, Duet, Fraser, Hudson, Pacifica, Radium, Snowbird, Tofino.
Swim Spa filter had a small handle on top and external threading on the bottom, and measures approximately 5" x 8" (excluding threading).
Used in the Riverflow 12/18/20 Swim Spa series.