Free Shipping Over $50

Free Ground Shipping on continental US orders over $50.
30 Day Return Policy*

We offer a simple 30-Day return/exchange policy so you can buy with confidence.
Proud USA Company

Saving you time and money by shipping directly to you from our Greenville, PA warehouse.

NEED IT NOW? Orders Placed by 1:PM EST Ship Same Day!

Crystal Water Spas

We offer over 200 of the most popular replacement filter cartridges on the market, including replacements for Unicel, Filbur, Pleatco, and OEM products. To find your filter by selecting the dimensions below.
Watch the video for advice on how to measure your cartridge.

Filter Finder

By Part Number

OR

By Measurement

USA METRIC

OR

By Manufacturer

showing 1 - 7 of 7 products

409-219 Pool Filter Cartridge

Guardian Filtration

Replaces: Unicel C-4335, Filbur FC-2385, Pleatco PRB35-IN

Sale!

~~$25.00~~ $19.98

409-219-M Pool Filter Cartridge

Guardian Filtration

Replaces: Unicel C-4335RA, Pleatco PRB35-IN-M, Filbur FC-2385A

Sale!

~~$30.99~~ $20.99

413-212 Spa Filter Cartridge

Guardian Filtration

Replaces: Unicel C-4950, Filbur FC-2390, Pleatco PRB50IN

Sale!

~~$29.99~~ $24.99

413-212-M Spa Filter Cartridge

Guardian Filtration

Replaces: Unicel C-4950RA Filbur FC-2390M Pleatco PRB50-IN-M

Sale!

~~$34.00~~ $28.99

6H9-223 Spa Filter Cartridge

Guardian Filtration

Sale!

~~$35.00~~ $30.99

6H9-223-M Spa Filter Cartridge

Guardian Filtration

Replaces: Unicel 6CH-47RA Pleatco PTL47W-P4-M

Sale!

~~$35.00~~ $30.99

819-198AM Pool Filter Cartridge

Guardian Filtration

Replaces: Unicel C-8320, Filbur FC-2750, Pleatco PSD125

Sale!

~~$69.99~~ $60.99