Darlly 71013M FC 1950 C 7699 PFAB100 Spa Pool Filter Cartridge ballvalves Mounting bases are practical service Mounting bases are practical service parts because a damaged or weakened base can affect how secure the pump feels after reinstallation This type of part is especially useful when the original dual function control panel still has a usable body or trim but needs internal sealing or valve restoration The Darlly 71013M filter cartridge is designed for compatible filtration applications and offers 100 square feet of filtration area with 3 1 16 inch top and bottom openings A cartridge like this is useful because it helps restore filtration capacity while preserving the dimensional fit needed by the existing filter housing