Waterway Carefree 22" Sand Filter Lateral & Manifold Assembly | 505-2160Waterway 505 2160 Lateral & Manifold Assembly for 22" Carefree Sand Filter (12 Port) The Waterway 505 2160 is a complete lateral and manifold assembly designed for select 22" Waterway Carefree sand filters. This internal assembly distributes water evenly through the sand bed during filtration and collects water efficiently during backwashing. Replacing a cracked manifold or broken laterals helps restore proper flow, filtration performance, and