Darlly SC828 Hot Tub Filter Cartridge Twin Pack (40025) Keep your spa water crystal clear with the Darlly SC828 Twin Pack Filter Cartridges. Manufactured using premium filtration media, these high-quality replacement filters effectively trap dirt, debris, body oils and other contaminants, helping to maintain clean, hygienic water while protecting your spa's circulation system. Designed as a direct replacement for the Darlly SC828 (40025), these filters are compatible with a wide range of Intex PureSpa inflatable hot tubs. They also replace Pleatco PBW4PAIR, Unicel C-4313 and Filbur FC-3753 equivalent filters. Features Twin pack – includes 2 replacement filter cartridges Genuine Darlly SC828 / 40025 Compatible with selected Intex PureSpa hot tubs Premium filtration media captures fine dirt and debris Washable and reusable for extended service life Helps maintain clean, clear and hygienic spa water Quick and easy to install Specifications Part Number: SC828 / 40025 Length: 100 mm Diameter: 110 mm Top: 50 mm open hole Bottom: 50 mm open hole Filtration Area: 6 sq. ft. Compatible Spa Models Compatible with many Intex PureSpa inflatable hot tubs, including: Bubble Massage Spa Bubble Massage Deluxe Spa Bubble Therapy Spa Greywood Deluxe Spa Chevron Deluxe Spa Sahara Tan Spa SimpleSpa PureSpa 4 Person PureSpa 6 Person PureSpa 8 Person PureSpa Plus PureSpa Jet & Bubble Deluxe PureSpa Portable Bubble Spa Replaces Darlly SC828 Darlly 40025 Pleatco PBW4PAIR Unicel C-4313 Filbur FC-3753 For the best filtration performance, rinse your filters regularly and replace them every 1–2 months depending on usage and water conditions. Keeping a spare set allows you to rotate filters while cleaning, helping to maintain optimum water flow and filtration.