Product Description:100% brand new and high qualityReusable foam boxSuitable for Intex Bubble and Jetted Pure-spasfor Replacement of S1 cartonReplacing the filter elements of paper filter is part of the daily maintenance of the pool. These cleaning and reusable foam filters will reduce your costThe initial cost of the cartridge is slightly higher than that of the cartridge, but the cartridge life is longer for a long timeMore durable than the carton, and it can be washed and reused many times.Specifications:colour:blueMaterial:spongesize:10.8 x 7.3 cmCenter hole drilling: Approx.4 cmPackage Contents:15 x Filter SpongesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.