Vortex 400 & O2 spa filter
Length - 210mm
Diameter - 125mm
Bottom thread diameter 45mm
Replacement cartridge for Purezone Polyspun
This filter fits these Vortex and post Aug 2010 O2 Spas and swim spas:
Azure, Aquagym, Aqualap, Cerium, Cobalt, Eon (Post Feb. 2013), Hydrozone, Iridium, Mercury, Nitro, Palladium, Spectrum and Xenon.
This spa filter may also suit some other spas.
Each spa has 1 x Purezone 400 filter and 2 x pleated cartridge filters however 3 x pleated cartridges can be used