Discover how our new Unicel replacement spa filter cartridges are Clearly The Best.
We make it easy for you to order your filter replacement. Start by choosing your spa manufacturer, filter diameter, or your the filter's part number.
Search by Spa Mfr.
When selecting my spa manufacturer, it is still important to verify all measurements of your existing filter before selecting the model.
Search by Outside Diameter. inches
Search by Unicel Part #
Search by Pleatco Part #
Search by Filbur/Clarathon Part #
*Clarathon filters are rebranded Filbur cartridges. To replace your Clarathon filter, select by Filbur Part Number.
We make it easy for you to order your filter replacement. Start by choosing your spa manufacturer, filter diameter, or your the filter's part number.
Why does America trust Unicel with it's spa filter cartridge needs?
It's simple. Quality Counts. Unicel has built itself into the country's largest supplier of pool and spa filters on its reputation for high quality, long-lasting products. Unicel uses a spunbonded, 100% polyester material called Reemay® as their filter medium. Reemay®, which has FDA compliance, is approved for milk filtration. Unicel also builds its replacement cartridges to OEM design specifications for quality and reliability.
One of the first things a filter expert will look for when examining a pool or spa element is the pleat fold or "knuckle radius" of the pleat. Why is this important? If you look carefully, you will notice that some manufacturers' pleats are very sharp while others are rounded and even appear puffy. With Reemay or other spunbonded polyester medias it is much easier to make a rounded fold than a sharp pleat. Moreover, a rounded fold can mask the filter manufacturer's inability to make straight pleats or maintain proper pleat spacing.
Unicel takes great pride in making it pleat folds sharp. Here's why:
Cleanability: Sharp folds increase the spacing between pleats making it easier to flush out loose debris.
Eliminates bridging: Allows particles to get down into the pleat instead of laying across the top of two or more pleats.
This assures maximum dirt holding.
Full utilization of the pleat surface: Allows debris to build up from the inside out, critical to obtaining the maximum cycle life between cleanings.
All this maximizes flow, minimizes pressure loss - by decreasing the surface contact between the inner pleat knuckle and center tube.
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