➤COMPATIBLE MODELS: PLFC-7375 Spa Filter is compatible with CD75N, Unicel C-7375, Filbur FC-3964, 1019301, AK-60032, APCC7500, 17543, PCD75-N. ★NOTE: This is a compatible replacement. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand. | ➤SPECIFICATIONS:Length: 14 3/4"; Outer Dimension: 7"; Top: Handle; Bottom: 2 11/16" open; Filtration Area: 75 sq. ft; Filter Material: Trilobal Filtration Fabric. | ➤NSF/ANSI 50 CERTIFIED: Trusted by 5 million pool owners！POOLPURE Pool and Spa filter has been rigorously tested and certified by IAPMO against NSF/ANSI 50, ensuring safe material usage, enhancing your overall hot tub & spa experience. | ➤SUPERIOR FILTRATION TECHNOLOGY: Our innovative "Dirt-Locking" technology ensures the fabric own 3x Debris Capture than standard filters. Filtration precision up to 50 microns, removing 99% of hair, leaves, dust, sediment, sand, and more for a pristine Spa experience. | ➤EASY MAINTENANCE: Enhanced grip handle specifically designed for easier installation/removal. Advanced trilobal fibers ensure effortless stain capture and release, simplifying the cleaning process. For optimal performance, it's recommended to clean the cartridges monthly.⚠️ Not for Backwashing – This filter cartridge is not designed for backwashing. Backwashing may cause cracks or permanent damage. | ➤EXTENDED LIFESPAN: With 25% thicker filtration fabric compared to standard filters, heavy chlorine-resistant & break-resistant end caps, the filter service life extends by 20-30% compared to normal filter cartridges. We're dedicated to offering top-quality products at an affordable price.