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You are here: Home > Hot Tub Filters by Size > 5" Diameter Hot Tub Filters
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Filter Range: 5" OD x 6-8" Length Filter Range: 5" OD x 8-10" Length Filter Range: 5" OD x 10-12" Length
Filter Range: 5" OD x 12-14" Length Filter Range: 5" OD x 14-16" Length Filter Range: 5" OD x 16-18" Length
Filter Range: 5" OD x 18-20" Length Filter Range: 5" OD x 20-22" Length Filter Range: 5" OD x 22-24" Length
Filter Range: 5" OD x 24-26" Length Filter Range: 5" OD x 30-32" Length
Hot Tub Filters by Size
From the above sub-category list select the outer estimated diameter of your filter.
You can browse the filters listed or to drill down further by selecting the length grouping your filter falls within.
Compare your filters end-caps and select the correct replacement hot tub or spa filter.

Not sure how to measure your filter?
Watch the below Pleatco engineer's How to Measure a Hot Tub Filter Video guide.

Have a hot tub or spa filter part number?
Use the above search field if you know the Pleatco, Unicel, Filbur, Master Spa or Baleen number.

Find Hot Tub Filter by Spa Manufacture.
One other way to find your filter is to select the Hot Tub Filters category where we list filters by manufacturer.

All About Spas Replacement Hot Tub and Spa Filter Help.
You can always call us at 888.915.9919 for expert help to find the right filter so you can relax.


How to Measure a Filter Cartridge

Quick tutorial on How to Identify your filter cartridge by measuring or by product number.
These two methods can help you to easily find a replacement filter cartridge for your hot tub or spa regardless of manufacturer.
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Replacement Hot Tub Filter Replacement Hot Tub Filter Replacement Hot Tub Filter
8 sq. ft. Pelican Recreation, H2O Recreation  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5301 Filbur # FC-3712  

OD 5" Length 8" Top ID Closed Bottom ID 2-1/4"
15 sq. ft. Intex Type "B" Model 51/52 520R/530R  

Replacement for Hot Tub Filter numbers Pleatco # PIN20 Unicel # C-5315 Filbur # FC-3752  

OD 5-3/4" Length 10" Top ID 1-7/8" Bottom ID 1-7/8"
15 sq. ft. Jacuzzi Bros. cfr-15 (in-line), Competition Pool, Cantar, Atlantic Pool    

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5615 Filbur # FC-1415

OD 5" Length 13-5/16" Top ID 2-3/8" Bottom ID 2-3/8"
Replacement Hot Tub Filter Replacement Hot Tub Filter Replacement Hot Tub Filter
16 sq. ft. Premier  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5616 Filbur # FC-2010  

OD 5-3/16" Length 9" Top ID 1-1/16" Bottom ID 1-5/8"
22 sq. ft. Advanced Spa Design, LA Spas  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5621 Filbur # FC-3091  

OD 5-3/16" Length 11-7/8" Top ID Closed Bottom ID 1-15/16"
25 sq. ft. Jacuzzi Whirlpool Bath  

Replacement for Hot Tub Filter numbers Pleatco # PJW25 Unicel # C-5624 Filbur # FC-1305  

OD 5-3/4"
Length 11-7/8"
Top ID 2-1/8"
Bottom ID 2-1/8"
Replacement Hot Tub Filter Replacement Hot Tub Filter Replacement Hot Tub Filter
25 sq. ft. Seasonmaster (Model 111 before 1994)  

Replacement for Hot Tub Filter numbers Pleatco # PLW25-4 Unicel # C-5325 Filbur # FC-3100  

OD 5-7/8" Length 6" Top ID Handle Bottom ID Male Slip Fitting
25 sq. ft. Seasonmaster (Model 111 aft.er 1994)  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5326 Filbur # FC-3107  

OD 5-7/8" Length 6" Top ID Handle Bottom ID Male Slip Fitting w/MPT
22 sq. ft. Premier Springwater,  Romanesque, Rogers  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5622 Filbur # FC-2015  

OD 5-3/16" Length 11-7/8" Top ID 1-1/16" Bottom ID 1-5/8"
Replacement Hot Tub Filter Replacement Hot Tub Filter 25 sq. ft. Dimension One Ozone Cartridge

25 sq. ft. Jacuzzi Whirlpool, Clearwater, Spillway, Seven Seas, Florida Whirpool

Replacement for Hot Tub Filter numbers Pleatco # PJW23-4 Unicel # C-5601 Filbur # FC-1330

OD 5-11/16"

Length 10-3/8"

Top ID 11-7/8"

Bottom ID 2-1/8"

30 sq. ft. Intex Type "D", Krystal Klear and Wet Set Models 520 530  

Replacement for Hot Tub Filter numbers Pleatco # PIN28 Unicel # C-5330 Filbur # FC-3748  

OD 5-3/4" Length 12" Top ID 1-7/8" Bottom ID 1-7/8"
25 sq. ft. Dimension One Ozone Cartridge  

Replacement for Hot Tub Filter numbers Pleatco # PDO25-4 Unicel # C-5402 Filbur # FC-3096  

OD 5-1/2"
Length 11-7/8"
Top ID 1-15/16" w/12 concentric holes
Bottom ID 2-7/8"
Replacement Hot Tub Filter Master Spas Twilight Outer Filter X268512 Replacement Hot Tub Filter
Master Spas X268512 Twilight Outer Filter
Price: $47.50
Sale Price: $21.25
Save $26.25!

(7)

25 sq. ft. Jacuzzi CFR-25/Cft.-25, Cantar, Atlantic Pool, Seven Seas, Emerald, Blue Ridge

Replacement for Hot Tub Filter numbers Pleatco # PJ25-IN-4 Unicel # C-5625 Filbur # FC-1425

OD 5"

Length 13"

Top ID 2-3/8"

Bottom ID 2-3/8"

Master Spas Twilight Series Outer Filter with Microban by Master Spas.

This filter is used with the Twilight Series Eco Pur Inner Filter X268511.

Works on Master Spas Twilight Series spas "ONLY", 2009-Current.

Filter made with Microban Antibacterial Protection by Pleatco.

Pleatco Number PMA25-M

Height: 8 1/4"
Diameter: 6 1/2"
Opening: 4 1/16"
25 sq. ft. Premier Springwater  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5426 Filbur # FC-2011  

OD 5-3/16" Length 9" Top ID 1-5/8" Bottom ID 1-5/8"
Replacement Hot Tub Filter Replacement Hot Tub Filter AK-90107 Replacement Hot Tub Filter
25 sq. ft. Premier    

Replacement for Hot Tub Filter numbers Pleatco # PPR23-4 Unicel # C-5427 Filbur # FC-2014  

OD 5-3/16" Length 11-7/8" Top ID 1-5/8" Bottom ID 1-5/8"
30 sq. ft. Hot Springs, Watkins Mfg., Hot Spot, Tiger River  

Replacement for Hot Tub Filter numbers Pleatco # PWK30V Unicel # C-5431 Filbur # FC-3910  

OD 5-1/8" Length 10-1/4" Top ID 1-15/16" Bottom ID 1-15/16"
20 sq. ft. LA Spas Sock Filter Substitute  

AK-90107 Replacement for Hot Tub Filter numbers Pleatco # PLAS35 Unicel # 5CH-203 Filbur # FC-0303  

OD 5-3/8"
Length 7"
Top ID Closed
Bottom ID 3" MPT
35 sq. ft. Marquis Spa, Marquis Corp, Amish Country, Everyday Hot Tubs, Hide Away Replacement Hot Tub Filter Replacement Hot Tub Filter
35 sq. ft. Marquis Spa, Marquis Corp, Amish Country, Everyday Hot Tubs, Hide Away  

Replacement for Hot Tub Filter numbers Pleatco # PPM35TC Unicel # C-5423 Filbur # FC-3623  

OD 5-3/16"
Length 11-15/16"
Top ID Closed
Bottom ID 1-5/8"
27 sq. ft. Marlin Spa, Romanesque  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5627 Filbur # FC-3070  

OD 5-3/16" Length 14-3/4" Top ID 1-1/16" Bottom ID 1-5/8"
23 sq. ft. Pentair-Pac Fab, Pac Fab Mytilus  

Replacement for Hot Tub Filter numbers Pleatco # N/A Unicel # C-5623 Filbur # FC-1910  

OD 5-5/16"
Length 13-9/16"
Top ID 2" w/loop string
Bottom ID 2"