Unicel C-4326 25 sq ft heavy duty filter cartridge for hot tubs and spasUnicel 25 SQFT Cartridge Filter, Heavy Duty for Hot Tubs and Spas C-4326 In stock$2999
Unicel C-4326 25 sq ft heavy duty filter cartridge for hot tubs and spas
Shop all Unicel Filter Cartridges

Unicel 25 SQFT Cartridge Filter, Heavy Duty for Hot Tubs and Spas C-4326

Ask a questionMPN C-4326
$2999
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • 25 square feet of media The full filtration area of the C-4326 element.
  • 106 pleats A high pleat count packs more surface into the same body, so flow stays up between cleanings.
  • Hot tub and spa sizing Built to the dimensions used by a range of spa and hot tub filter housings.
  • Genuine Unicel The Unicel C-4326, not a look alike element.
  • Check the dimensions first Cartridges are chosen by end fitting and size, so measure the old one before ordering.
  • Commercial or residential The same element is used in both settings.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Unicel 25 SQFT Cartridge Filter, Heavy Duty for Hot Tubs and Spas C-4326, SKU UNI-60-5422. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Unicel 25 SQFT Cartridge Filter, Heavy Duty for Hot Tubs and Spas C-4326
Unicel Filter Cartridges

Unicel 25 SQFT Cartridge Filter, Heavy Duty for Hot Tubs and Spas C-4326

$2999
Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037
Unicel Filter Cartridges

Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037

$24599
Unicel Filter Cartridge Replacement, 145 Sq Ft for Jandy CL580, C-7482
Unicel Filter Cartridges

Unicel Filter Cartridge Replacement, 145 Sq Ft for Jandy CL580, C-7482

$12299
Unicel Replacement Cartridge Filters for Clean & Clear Plus CCP420 4-Pack, C-7471-4
Unicel Filter Cartridges

Unicel Replacement Cartridge Filters for Clean & Clear Plus CCP420 4-Pack, C-7471-4

$33799
Unicel Filter Cartridge 4-Pack for Hayward® SwimClear C4020/4025/4030, C-7488-4
Unicel Filter Cartridges

Unicel Filter Cartridge 4-Pack for Hayward® SwimClear C4020/4025/4030, C-7488-4

$30199
Unicel Cartridge Filter, 100 sq ft, for Pentair Clean and Clear CC100, C-9410
Unicel Filter Cartridges

Unicel Cartridge Filter, 100 sq ft, for Pentair Clean and Clear CC100, C-9410

$5999
Unicel 18 in. 36 Sq Ft DE Grid, FG-1236
Unicel Filter Cartridges

Unicel 18 in. 36 Sq Ft DE Grid, FG-1236

$2699
Subtotal

Similar products

Other products people compare with this one.

Unicel C-4950 replacement filter cartridge, 50 square feet, for hot tubs and spas Unicel C-4950 Filter Cartridge, 50 Sq Ft for Hot Tubs and Spas$4099 Unicel C-5626 25 sq. ft. replacement filter cartridge for Marquis and Amish Country spas Unicel 25 Sq. Ft. Replacement Filter Cartridge for Marquis and Amish Country Spas, C-5626$2599 Pleatco PWK30-4 30 sq ft replacement filter cartridge for Watkins Hot Spring Spas Pleatco 30 Sq Ft Replacement Filter Cartridge for Watkins Hot Spring Spas, PWK30-4$3399 Unicel C-5374 75 sq. ft. replacement filter cartridge for Pentair and Waterway Rec Whse filters Unicel 75 Sq. Ft. Replacement Filter Cartridge for Pentair and Waterway Rec Whse Filters, C-5374$3999 Pleatco PPM35SC-F2M 35 sq ft filter cartridge for Marquis Spas Pleatco 35 Sq Ft Filter Cartridge for Marquis Spas, PPM35SC-F2M$3499 Unicel Filter Cartridges 1-1/2" MPT CARTRIDGE 20 SQFT 6-3/4" | 4CH-20 Unicel Filter Cartridges 1-1/2" MPT CARTRIDGE 20 SQFT 6-3/4" | 4CH-20$3299 Pleatco PWW50L 50 sq ft filter cartridge for Waterway Teleweir Pleatco PWW50L 50 Sq Ft Filter Cartridge for Waterway Teleweir$3699 Unicel 5CH-35 35 square foot pleated filter cartridge with 1-1/2 inch MPT end Unicel Cartridge, 35 SQFT 5CH-35$4199 Pleatco PIN20 replacement filter cartridge for Intex Easy Set Pool B version Pleatco Replacement Filter Cartridge for Intex Easy Set Pool B Version, 15 Sq Ft, PIN20$2962 Pleatco PC7-120 replacement filter cartridge for Intex type A or type C Pleatco Intex Replacement Filter Cartridge, Fits A or C, PC7-120$2399
Pleatco PRB18-4 replacement filter cartridge, 18 square feet Pleatco PRB18-4 Filter Cartridge, 18 Sq Ft$3399 Pleatco PWW50P3 40 sq ft replacement pool filter cartridge Pleatco 40 Sq Ft Filter Cartridge Replacement, PWW50P3$3899 Pleatco PWW10 10 sq ft skim filter cartridge for Waterway skim filters Pleatco 10 Sq Ft Skim Filter Cartridge, PWW10$2199 Pleatco PLBS50 replacement pool and spa filter cartridge Pleatco PLBS50 Replacement Filter Cartridge$4099 Unicel C-4320 20 square foot replacement pool filter cartridge Unicel C-4320 Cartridge, 20 Sq. Ft.$2999 Pleatco PSANT20P3 20 square foot replacement spa filter cartridge Pleatco 20 sq ft Replacement Filter Cartridge, PSANT20P3$3499 Web Price Pleatco PPM50SC-F2M-M 50 sq ft antimicrobial spa filter cartridge Pleatco Cartridge 50 SQFT, Antimicrobial, PPM50SC-F2M-M$3799 Pleatco 25 square foot CFR-25 replacement filter cartridge Pleatco 25 sq ft Filter Cartridge, CFR-25, X15-PJ25-IN-4$3399 Filbur 1-1/2" MPT CARTRIDGE 25 SQFT 9-3/4" | FC-0131 Filbur 1-1/2" MPT CARTRIDGE 25 SQFT 9-3/4" | FC-0131$3699 Filbur WATERWAY CARTRIDGE 25 SQFT | FC-2375 Filbur WATERWAY CARTRIDGE 25 SQFT | FC-2375$3299

Product details

The Unicel C-4326 is a 25 square foot pleated cartridge for hot tubs and spas. It measures roughly 4.93 inches across and 13.31 inches long, listed elsewhere in fractions as 4-15/16 inches by 13-5/16 inches.

What the pleat count buys you

The element carries 106 pleats. Packing more folds into the same outside dimensions raises the total media area, which is what the 25 square foot figure describes. More area means the cartridge takes longer to load up with debris, so flow holds steady further into each cleaning cycle.

Before you order

Spa cartridges are chosen on outside diameter, length and end fitting. One line in the manufacturer data lists the diameter as 4-5/16 inches rather than 4-15/16 inches, so the safe move is to measure the cartridge coming out and compare it to the figures above.

Cleaning and replacing

Rinsing and soaking will keep an element working for a long time, but pleats eventually flatten and the media thins. When a freshly cleaned cartridge no longer restores flow, it is finished.

Specifications
Brand Unicel
Manufacturer part number C-4326
UPC 678285140164
Type Pleated filter cartridge
Filter area 25 sq ft
Outside diameter 4-15/16" (4.93"), one source in the data lists 4-5/16"
Length 13-5/16" (13.31")
Pleat count 106
Application Hot tubs and spas
Shipping weight 1.15 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

How big is the C-4326?
It is listed at 4-15/16 inches outside diameter by 13-5/16 inches long, which the specification sheet also gives as 4.93 by 13.31 inches. One line in the source data shows 4-5/16 inches for the diameter, so measure the cartridge you are replacing before you order.
How much filter area does it have?
25 square feet, across 106 pleats.
Is it for a pool or a spa?
It is sized for hot tubs and spas, in both residential and commercial use.
When should a cartridge be replaced rather than cleaned?
Cleaning restores flow only while the pleats are intact. Once the media is thin, the pleats are permanently flattened, or the end caps are separating, no amount of cleaning brings the flow back.
Ask your own question