Dimenson One Spas 1561-00 replacement filter cartridge.
Has a flat top with Y stands and a small hole (Also called a castle top). The bottom has open hole hole with a bayonet twist lock.
Filter Dimensions
Length: 267mm (not including Y stands)
Diameter: 178mm
Top Hole ID: 6mm
Bottom Hole ID: 50mm
Warranty
1 year warranty for manufacturing or material defects only
*Please note due to manufacturing tolerances there may be a slight variation to the above measurements.