Happy HHTWK65H Hot Spring Tub Filter Fits PWK65 C-8465 80651 Caldera Relay Spa
Happy Hot Tubs HHTWK65H Filter For Hot Springand Caldera Spas. Happy - HHTWK65H. Pleatco - PWK65. Darlly - 80651. Max-flow Core to maximise the flow through the core of the filter and improve hot tub performance.