Length:Length is measured from the outside edge of end cap to end cap, not including any handles, threads or slip fittings. 10-1/2"
Bottom:Outer Diameter (OD) of threads measures approx. 2-5/16.2" Fine Thread
Premium replacement for:Unicel:Unicel part numbers either start with a "C" or contain a "CH" like "C-8475RA" or "6CH-49".7CH-552
Pleatco:Pleatco part numbers start with a "P" like "PWW100ST".PTL55XW-F2M
Filbur:Filbur part numbers start with an "FC-" like "FC-0360".FC-0465
I ordered two filters and some chemicals. Ordering was easy and the $3.99 shipping was reasonable. Best part was I received the order in two days, which was totally AWESOME!
I always use Spa Depot for all my spa needs! Fast service