Feature:Replacing the paper filter element is part of the daily maintenance of the pool, and regular replacement of the element may be costly. These washable and reusable foam filters will reduce your costs,the initial cost of this type of ink cartridge is slightly higher than that of the paper box, but a long time makes the life of the ink cartridge longerThis foam filter will be more durable than the carton and can be washed and reused multiple times.It is recommended to change a carton every week, and these foams can be simply cleaned and put back.You should see the foam filter last for about 2 months.Specification:Type: Filter spongeMaterial: spongeQuantity: 1pcColor: BlackSize:Long* diameter *apertureA: 108*73*40mm/4.25*2.87*1.57"B: 102*93*30mm/4.02*3.66*1.18"C: 200*100*40mm/7.87*3.94*1.57"Prompt:It is recommended to change a box every week. These foams are easy to clean and replace. You should see that the foam filter can last about 2 months.The only thing you need to do is to remove the filter when it hits the swimming pool, because excessive chlorination will quickly destroy the foam. Normal levels of chlorine and bromine are good for disinfection, these foams have been tested at normal levels.Note:1. The actual color of the project may be slightly different from the color displayed on the website, which is caused by many factors, such as the brightness and brightness of the display.2. Please deviate slightly from the measured data.3. Please allow an error of 1-3cm.1 X Pool Filter Foam