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How to Determine the Right Replacement Cartridge for Your Pool or Spa?
Already have the part number!
Simply input the filter cartridge's part number or its replacement number into the search bar on our product page to verify compatibility.
Unsure of the part number!
Selecting the appropriate cartridge can be achieved by assessing your current one. Follow these steps:
1. Gauge the cartridge's external diameter, ensuring accuracy to within +/- 1/16 inch.
2. Measure the cartridge's length from one end cap to the other, excluding any protruding handles or extensions, to within +/- 1/16 inch.
3. Determine the top and bottom type. If they're open, measure the inner diameter of the opening to within +/- 1/16 inch. For closed end caps, jot down distinct features (e.g., "Handle", "Cone").
4. Note down the filter's manufacturer and model number where the new cartridge will be placed.
5. Check if there's a central core (like a PP pipe) present.
Ideal Replacement for Pool & Spa Cleaning Systems
Compatible with all PureSpas models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, 28413E and 28453E.
DISCLAIMER:
ALL MANUFACTURERS' NAMES AND PART NUMBERS REMAIN THE PROPERTY OF THEIR RESPECTIVE HOLDER(S) AND ARE USED FOR COMPATIBILITY INFORMATION ONLY. AQUALTRA IS AN INDEPENDENT BRAND.
NOTE:
AQUALTRA Type S1 Replacement Cartridge sifts out the debris and dirt in your above ground swimming pool so the pump can refill it with clean pool water. When the hot tub filter get dirty, rinse them with the garden hose and they're good to go. It's recommended you replace the filter cartridge every 2 weeks to ensure your pool obtains the highest standard of cleanliness and hygiene.
Specifications
- Length: 2.8”
- Outside Diameter: 4.2”
- Top: 1 7/8" Opening
- Bottom: 1 7/8" Opening
- Core: PP
Nicky Smith
Reviewed in Canada on March 26, 2025
Fit our hot tub and work well. Much cheaper than the brand name. Would recommend.
rob watkins
Reviewed in the United States on February 7, 2025
Fits and works like it should
OCD
Reviewed in the United States on February 26, 2024
They work as a filter should
Matt L.
Reviewed in the United States on December 27, 2024
Perfect fit and function
Lee Rimer
Reviewed in the United States on December 12, 2024
This fit my hot tub! Thank you! Great value for the money, and went I easy, filter quality is good, water looking clear!
Sean T
Reviewed in the United States on October 4, 2024
I use these in our hot tub and they keep the water filtered and last a few weeks or a month! Better price point too! I Highly recommend these filters 👍
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