Tlily - 18 Pcs for Pure Spa Reusable Washable Foam Hot Tub Filter Cartridge Type S1

100% Brand New and High Quality, Reusable Foam Box Suitable for Bubble and Jetted Pure Spas for S1 Cardboard Replacement Replacing the filter elements of the paper filter is part of daily pool maintenance. Cleaning and reusable foam filters will reduce your costs The initial cost of the cartridge is slightly higher than that of the cartridge, but the cartridge life is longer for a long time More than the cardboard, it can be washed and reused many times. Specifications: Size: 10.8 x 7.3 cm Center hole drilling: about 4 cm Color: Blue Material: Sponge Package Contents: 18 x Filter Sponges Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.