MIBNCE High Quality Material Spa Filter S1 is made of high quality sponge, The foam filter has good flexibility and high elasticity. which can be reused and cleaned, and can be used for a long period. S1 Filter Cartridge Replacement: Size: 10.8*7.3cm,Drilling size: about 4.0cm.replaces 29001E filter cartridge. Works with Intex PureSpa models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, 28413E and 28453E. Easy to MaintainMIBNCE. Changing your paper filter cartridge is part of your pool's routine maintenance and regular cartridge replacement can be quite expensive. Our sponge filter is washable, easier to clean and maintain than traditional paper filters Durable Efficient CleaningThe sponge filter can filter out many impurities in the swimming pool, extend the life of the filter media, provide efficient water flow, reduce clogging, and achieve long-term filtration and cleaning. ApplicablePool filter foam sponge is suitable for swimming pools, bathtubs, spas, bathrooms, aquariums and other occasions. Product Information Technical description Package dimensions 37.1 x 16.5 x 9.4 cm; 120 grams Product description Foam Pool Filter, Cartridge Sponge Filter, Type S1 Filter Sponge, Washable Reusable Foam Filter Cartridge, for Spa, Swimming Pool, Jacuzzi Specifications: Type: filter sponge Material: sponge Color: sky blue Features: Changing the paper filter cartridge is part of your pool's routine maintenance and regular cartridge replacement can be costly. These washable and reusable foam filters will allow you to reduce your costs. The initial cost of this cartridge is slightly more than a paper cartridge, but will last a long time This foam filter will outlast your paper cartridges and can be washed and reused multiple times. It is advisable to change a paper cartridge every week, whereas these foams can simply be washed and replaced. You should see a foam filter last around 2 months. Tips: It is advisable to change the paper cartridge every week, whereas these foams can simply be washed and replaced. A foam filter lasts about 2 months. The only thing you have to do is remove this filter when treating with chlorine, as this product disintegrates the foam. Normal levels of chlorine and bromine sanitizer are not a problem and these foams have been tested at normal levels. Content: 4/8 foam pool filters.