[Filter Compatible Models] Our swimming pool filter type S1 is compatible with all Intex PureSpa models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, and 28413E. [Powerful Filtration Performance] Premium quality dacron fabric collects hair, leaves, dust, sediment, sand, and other impurities. Easy to clean and replace. The S1 Intex hot tub filter cartridge is installed inside the filter pump and captures dirt as it passes through the system. [Easy To Clean] Our type S1 replacement spa filters feature extra-durable plastic and quality Dacron paper pleats. Our spa filters for hot tubs are easy to clean, so you can reuse them again and again. Enjoy clean leisure time in your pool. [Warm Tip] It is recommended to change the spa filter regularly to maintain filtration efficiency and replace them every 2-3 weeks to keep the water clean. Provides a larger filter area, making the filter efficiency higher. Features include toughness, resistance to dilute acid, fine filtration, and strong dirt absorption ability. [Powerful Filtration Performance] The powerful thrust of the filter can effectively remove hair, leaves, dust, sediment, sand, impurities, and more. Provides you with clear and clean water, allowing you to easily enjoy your health. Color: blue Material: PET + non-woven fabric Size: 107 x 74mm Package Contents: 6 x Inflatable pool filter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.