Reusable Washable Filter: Replace your paper filter cartridge with these washable and reusable foam filters to reduce maintenance costs. Designed for routine pool care, these filters offer a cost-effective alternative to disposable cartridges. Long Working Time: The initial cost is slightly higher than a paper cartridge, but the durable construction ensures a significantly longer lifespan. Durable: Made to outlast traditional paper cartridges, this foam filter can be washed and reused multiple times, providing reliable performance over extended use. Reusable Washable: Unlike paper cartridges that require weekly replacement, these foam filters can be easily rinsed and reinstalled, saving time and money. Keep Water Clean: Effectively helps maintain clean and clear pool water, making it a practical choice for pool maintenance. Specifications: Fitment: For Intex S1 Type Material: Sponge Color: Blue Size (H x D): 10.8 x 7.3 cm (Approx) Center Hole Drilled: 40 mm (Approx) Note: It takes 2 hours for the compressed product to fully expand Package Contents: 12 x Filter Sponge Note: Light shooting and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allows an error of +/- 1-3 cm.