135 sq. ft. AK-400043 replacement spa cartridge filter. Diameter: 5-3/8 Inch Length: 30-1/8 Inch Bottom: 2-1/8 Inch Top: 2-1/8 Inch This is the Pleatco PCST120 compatible RJ/Baleen AK-40043 spa filter that uses Reemay filter media and is also compatible with 817-0147/ FC-2976/ AK-400043, C-5351 and the new made-in-the-USA OP-0515 spa filter.. This filter type is found in Coast Spa / Waterway hot tub filter assemblies and hot tubs. Replace your spa cartridge filters annually and rinse, clean them per manufacturer’s instructions . Contact us with questions about finding the right part for your Coast Spas hot tub. View AllClose
