Changing your paper filter cartridge is part of your routine maintenance for your pool and regular replacement of the cartridge can prove costly. These washable and reusable foam filters will reduce your costs. The intial cost of this cartridge is slightly more than a paper cartridge yet will outlast a cartridge by a long way. This Foam filter will outlast your paper cartridges and can be washed and reused several times over. These foams can simply be washed and put back. For Intex Type A Specification: Material: Filter Foam Color: Blue(As Pictures Show) Fitment: For Intex Type A Size Chart: Size(H*D):10.2cm*9.3cm / 4*3.66in. ; Center Hole Drilled: 3cm/1.18in. (Approx) Size(H*D):10.8cm*7.3cm / 4.25*2.87in. ; Center Hole Drilled: 4cm/1.57in. (Approx) Size(H*D):20cm*10cm / 7.87*3.94in. ; Center Hole Drilled: 4cm/1.57in. (Approx) Package Includes: 1 x Swimming Pool Filter Cartridge Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.