Clarathon Premium Hot Tub Filters

    Drop-in & screw-in spa filter cartridges

    Measure Your Old Hot Tub Filter

    Use Menu to Narrow Your Search:

    1. Choose Type: Drop-In or Screw-In.
    2. Got Part #? [Search this category] No match? Go to 3.
    3. Pick: Spa Brand if known. No match? CLEAR Brand (x). Go to 4.
    4. Select: Diameter & Length ranges to narrow selection.

    Follow measuring tips below:

     
    Measuring tips: tape measure showing fractional increments

    Confirm Spa Filter Dimensions

    • Round all figures to nearest ⅛”.
    • Compare to search results.
    • View photos to confirm match.
    • Variances ±⅛” are normally OK.

    See how to measure filter below:

     
     
    Measuring spa filter cartridge diameter & length

    How-to Measure Diameter & Length

    Measure old filter’s end-cap Diameter (edge-to-edge width) & Length (cap-to-cap height). Exclude handles/fittings.

     
    Measuring spa filter cartridge openings

    How-to Measure Inner Opening

    If filter has flush end-cap opening(s), measure Inside Diameter.

     
    Measuring spa filter cartridge fittings

    How-to Measure External Fitting

    If filter has a protruding fitting, measure Outside Diameter. Note style: Coarse Thread, Fine Thread, or Male Slip.

    Clarathon Spa Filter FC-3027 PH3.7B C-2304
    FC3027
    Clarathon Filter for Rainbow-Pentair/Sta-Rite FC3060
    Clarathon Spa Filter for Rainbow/Pentair FC-3060 PH6 C-2306 24101-19
    FC3060
    Clarathon Microban Spa Filter FC-2320M PRB14.5-M C-2302-AM
    FC2320M
    Clarathon Spa Filter FC-2320 PRB14.5 C-2302
    FC2320
    Clarathon Antimicrobial Filter FC2324M
    Clarathon Microban Spa Filter FC-2324M PRB8.5-M C-2303AM
    FC2324M
    Clarathon Filter FC2324
    Clarathon Spa Filter FC-2324 PRB8.5 C-2303
    FC2324
    Clarathon Microban Spa Filter for Master Spas FC-1001M PMA10-M C-3310AM X268056
    FC1001M
    Clarathon FC9938 premium ultra spa filter
    Clarathon Spa Filter for Inflatable Spas NCF580 AS101 EST5869
    FC9938
    Clarathon Spa Filter Twin-Pack for Coleman/SaluSpa 90352E 58323 58239 Type VI
    FC9957
    Clarathon fc9959 sock filter
    Clarathon Sock Spa Filter for Sierra/Southwest Spas
    FC9959
    Clarathon FC2769 spa filter
    Clarathon Microclean Disposable Spa Filter for Sundance 6473-164
    FC2769
    Clarathon Spa Filter Twin-Pack for Intex/PureSpa S1 29001E
    FC9901
    Clarathon FC3753 spa filter
    Clarathon Spa Filter Twin-Pack FC-3753 PBW4PAIR C-4313
    FC3753
    Clarathon Microban Spa Filter FC-3077M PWW10-M C-4310AM
    FC3077M
    Clarathon Spa Filter FC-3711 PC7-TC C-4304
    FC3711
    Clarathon Spa Filter FC-3077 PWW10 C-4310
    FC3077
    Clarathon Spa Filter FC-3710 PC7-120 C-4607
    FC3710
    Clarathon Spa Filter for Spa2Go/Spa-n-a-Box LGFPKWS
    FC9902
    Clarathon Spa Filter FC-0184 PIC50N C-4351
    FC0184
    Clarathon Spa Filter for MSpa - Bubble Spa B03008 B0300874
    FC9921
    Clarathon Threaded Filter for DM/Vita/Voyager Spas FC3029
    Clarathon Spa Filter for Vita Spas FC-3029 PVT25N-P4 179192
    FC3029
    Clarathon Spa Filter FC-0122 PSG13.5P4 4CH-19
    FC0122
    Clarathon Spa Filter FC-0125 PHC25P4 4CH-20
    FC0125
    Clarathon Spa Filter FC-0185 PSG25 C-4303
    FC0185
    Clarathon Spa Filter FC-0121 PTL18P4-4 4CH-21
    FC0121
    Clarathon Microban Spa Filter FC-0131M PGS25P4-M 4CH-24RA
    FC0131M
    Clarathon Spa Filter FC-0131 PGS25P4 4CH-24
    FC0131
    Clarathon Spa Filter for American Spas FC-3071 PGS25-XP4 C-4324
    FC3071
    Clarathon Spa Filter for ThermoSpas FC-0139 PTS35-XP C-4324
    FC0139
    Clarathon Antimicrobial Threaded Filter for Saratoga Spas FC0132M
    Clarathon Microban Spa Filter for Saratoga Spas FC-0132M PSG27.5P4-M
    FC0132M
    Clarathon Microban Spa Filter FC-0197M PSG27.5P2-M
    FC0197M
    Clarathon Spa Filter FC-0197 PSG27.5P2
    FC0197
    Clarathon Microban Spa Filter FC-0141M PTL25P4-4-M 4CH-30RA
    FC0141M
    Clarathon Spa Filter FC-0141 PTL25P4-4 4CH-30
    FC0141
    Clarathon Filter FC1215
    Clarathon Spa Filter for Hayward FC-1215 PA20-4 C-4320 C-200
    FC1215
    Clarathon Filter FC1220
    Clarathon Spa Filter FC-1220 PA225-4 C-4325 C-225
    FC1220
    Clarathon Threaded Filter for Jacuzzi FC2761
    Clarathon Spa Filter for Jacuzzi FC-2761 2540-387
    FC2761
    Clarathon Spa Filter FC-0151 PTL50P4-4 4CH-50
    FC0151
    Clarathon Threaded Filter FC0177
    Clarathon Spa Filter FC-0177 PDO-UF40P2 4CH-940
    FC0177
    Clarathon Spa Filter FC-0161 PTL35P4-4 4CH-35
    FC0161