table for bubble and jet Pure spas. For changing the S1 cardboard.Changing the filter elements of the paper filter is part of the pool's daily maintenance. These cleanable and reusable foam filters reduce your costs.The initial costs are slightly higher than , but the service life is longer for a long time.More durable than cardboard and can be washed and reused many times.Size: 10.8x7.3 cmCenter hole drilling: 4 cmmaterial: spongecolor: BluePackage contents:20 x filter spongesOnly the aforementioned packaging contents, other products are not included in the price.Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.