Pleatco Watkins Hot Spring Spas Filter Cartridge Replacement | PWK30-EC Pentair Transformers for 12V Lights These disks are different sizes

These disks are different sizes so that way the correct pressure can be adjusted to match the pressure needed for the cleaner to operate

black (2-pack) are replacement parts that are made by Hayward

The SandShark cleaner’s rows of flexible rubber scrubbing teeth dislodge stubborn dirt and vacuum it away

Large-capacity 26″ diameter top-mount sand filter by Pentair (SKU EC-145333) with ~3

Pleatco Watkins Hot Spring Spas Filter Cartridge Replacement | PWK30-EC Pentair Transformers for 12V Lights These disks are different sizesTheir filters have been designed to meet high quality standards and outperform all other filters in the market. Pleatco filters are engineered to meet or exceed OEM specifications for pool and spa water filtration. The Pleatco Advanced filtration fabrics have been uniquely designed to have the highest fiber count in the industry and deliver the most advanced filtration technology available. Designed and engineered to provide the cleanest water