Length:Length is measured from the outside edge of end cap to end cap, not including any handles, threads or slip fittings. 19"
Top:This is the actual inside hole diameter, excluding any taper.4-5/8" Inner Filter Opening
Bottom:The dimension given is the overall outside diameter (O.D.) measured at the fittings widest point.2-3/16" OD Male Slip
Premium replacement for:Filbur:Filbur part numbers start with an "FC-" like "FC-0360".FC-2772
Other:6541-397, 6473-164, 6473-165, FC9936, FC-2771
Works well. Saves a lot of money vs store.
I use this filter set on my Sundance Optima. The outer filter lasts about 3 years with regular cleanings. I keep two in rotation. The inner filter gets replaced each time I change the water. I clean both filters in between water changes.
Works exactly as promised.
Appears to be top quality and it's a double pack making it easy to swap and clean filters monthly
Spa Depot took care of us with our old Capri, now we have a Sundance and the service is still great. Our go to place for all hot tub needs.
Have purchased these filters for my 10 year old Sundance Optima, great fit and lower price than the big pool supply stores and did I mention the super fast shipping.
The filters seem to be of good quality. The inner filter lip was bent either from mfg or shipping so I had to reform it into shape to fit inside the outer filter.
The filters for my spa were the exact replacement and they came quickly. Can't ask for anything more.
This product is used for my hot tub. I plan to use Spa Depot in the future for this product. Great service and timely on delivery.