General description 100% brand new and high quality, this 96 Piece Series for Pure Spa Reusable Washable Foam Filter Cartridge is designed for Bubble and Jetted Pure spas, serving as a replacement for the S1 carton. Replacing the filter elements of the paper filter is essential for daily pool maintenance. The cleaning and reusable foam filters help reduce costs over time, as they can be washed and reused multiple times, offering a longer lifespan compared to traditional cartridges. Technical specifications Size: 10.8 x 7.3 cm Center hole drilling: approximately 4 cm Material: sponge Package Contents: 96 x Filter Sponges Measurement allowed error: +/- 1-3 cm Recovery time for compressed product: 2 hours