Product Overview
203 x 125mm Vortex Threaded Purezone Spa Filter – 400 Cartridge
This Purezone 400 replacement filter is designed for Vortex, O2, and Arcadia spas using threaded filter systems. It may also be compatible with other spa brands or models.
Superior Micro-Filtration:
While standard filters trap particles as small as 50 microns (50/1000th of a millimetre), Purezone micro-filtration captures particles down to 5 microns (5/1000th of a millimetre)—delivering noticeably cleaner spa water.
Compatibility Tip:
- Does your Vortex or O2 spa have three filters? If yes, this is the correct Purezone filter for your system.
- Check the filter face image in the additional views to confirm compatibility.
Color Note:
Filter color may vary (blue or brown). This does not affect performance.
Filter Configuration:
Each spa uses:
1 x Purezone filter
2 x Pleated cartridge filters
(Alternatively, 3 x pleated filters may be used.)
For the matching pleated filter, click here.
How to measure Spa Filters:
Specifications:
- Manufacturer: For O2 / Vortex / Arcadia
- Model: Purezone 400
- Height: 203mm
- Outside Diameter: 125mm
- Top: Closed
- Bottom: Fine thread spigot (Internal Diameter: 37mm)
- Sold individually
Selection Tips:
✔ Check the diameter and thread type
✔ Verify your spa model and brand
✔ Refer to your spa’s data label
Need assistance? Contact our Parts Experts for help confirming compatibility.
