<b>Features:</b><br/>Changing your paper filter cartridge is part of your routine maintenance for your pool and regular replacement of the cartridge can prove costly. <br/>Initial cost of this cartridge is slightly more than a paper cartridge yet will outlast a cartridge by a long way<br/>This Foam filter will outlast your paper cartridges and can be washed and re-used several times over.<br/>Advises changing a paper cartridge each week, whereas these foams can simply be washed and put back.<br/><br/><br/><br/><br/><b>Specifications:</b><br/>Type: Filter Sponge<br/>Material: Sponge<br/>Quantity: 4pc<br/>Size: 20.0*10.0*4cm/7.9*3.9*1.5 inch(H*D)<br/>Center Hole Drilled:approx.40mm<br/>Net Weight: 20g/0.7oz<br/><br/><br/>Package:<br/>4*Filter Sponge<br/><br/>