product description: 1. Required in all filter out pumps to filter all particles to keep pool water clean 2. Replace cartridge each two weeks 3. For use in Lay Z Spa clear out pumps. 4. wonderful clear out for handy seasonal maintenance Filter cartridge is straightforward to replace. -Product Dimensions 10 -Item mannequin number 58094 Compatible With: Filter Cartridge II is to be used in Lay Z Spa filter pump. Package Include: 1 or 2pcs Hot Tub Filter Note:Due to the light and screen setting difference, the item's coloration may be barely varied from the pictures. Please enable slight length contrast thanks to various manual measurement.