PoolPure Spa filter replacement is tested and certified by IAPMO against NSF/ANSI 50.

Length: 8”; Outside Diameter: 4 5/8″; Top: Circular Handle; Bottom: 1 1/2″ MPT Threaded; Filtration Area: 18 sq. ft.

PLF4CH-21 filter compatible Pleatco Pleatco: PTL18P4, Unicel: 4CH-21, Filbur: FC-0121, SD-00845, SD-00821, SD-00838, PTL18-XP, SD-01161, PTL18-4, SD-01363. NOTE: All trademark remain the property of their respective holder(s) and are used for compatibility information only. POOLPURE is an independent brand.

The Trilobal Fabric Structure filter material makes it easy to release impurities when cleaning the filter.

It is recommended that you clean cartridges every 2 weeks to maximize your spa’s performance.

Innovated “Dirt-Locking” technology make the fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc. Enjoy clean leisure time in your spa and hot tub.

【Long Service Life】 Unique Trilobal Filtration Fabric Structure make it easier to capture large volume of contiminants. It is also easy to wash/clean to recondition the filter. This filter lasts for 1-2 years when proper maintenance is performed. We are committed to providing the best quality at good price.