915 Generation 2 Pcs Filter Sponge for S1 Type for Hot Tub Pool

Dimensions: inner diameter: 1.57 inches/4 cm, outer diameter: 4.25 inches / 10.8 cm, the length of the pool filter is 2.87 inches / 7.3 cm.
High Quality: The Hot Tub Filter is made of sponge, soft and durable, with good flexibility, not easy to deformed or break.
Initial cost of this is slightly more than a paper yet will outlast a by a .
Reusable: This Foam filter will outlast your paper cartridges and can be washed and re-used over.
Application: Suitable for Bubble & Jetted Pure-spas, replaces the S1 type paper . colour: white
Material: sponge Package Contents:
2 x Pool Filter Sponge Only the above package content, other are not included.
Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.