Type I Vs Type Vi Filter Uk
Type VI is the common Lay-Z-Spa hot-tub cartridge class in the UK; Type I is typically a smaller Flowclear pool-pump cartridge. Do not interchange them by guesswork—wrong letters cause poor seating and weak filtration.
Why UK titles cause mismatches
Supermarket and marketplace copy often mixes “pool filter” language into spa accessories. If your appliance is an inflatable spa with a VI housing, a Type I pool cartridge is the wrong basket.
Decision path
- Identify the appliance: inflatable spa versus above-ground pool pump.
- Read the type letter on the housing or manual.
- Compare dimensions with the installed cartridge.
- Buy only the matching letter.
Comparison table
| Cue | Type I (typical) | Type VI (typical) |
|---|---|---|
| Usual appliance | Flowclear-style pool filter pumps | Lay-Z-Spa / inflatable hot tub housings |
| Listing language | Pool pump / Flowclear Type I | Lay-Z-Spa Filter Cartridge VI / Size VI |
| Mismatch symptoms | Spa housing will not seat; flow issues | Pool pump basket too large or wrong seat |
| Buyer rule | Buy only if pump specifies Type I | Buy only if spa/housing specifies VI |
UK roundup writing contrasts Flowclear Cartridge I for pools with Lay-Z-Spa Cartridge VI for hot tubs and warns that the wrong cartridge harms fit and filtration—see this Testix UK filter cartridge comparison as market-language evidence, not as lab rankings. A MadFun UK Type I Flowclear listing positions Type I for Bestway 330 gal filter pumps (model context 58381) with 2–3 week replacement guidance. The official Lay-Z-Spa UK VI cartridge page positions Type VI specifically for Lay-Z-Spa hot tubs rather than generic pool pumps.
Who should buy which
- Do not buy Type VI for a pool pump that specifies Type I/II/III.
- Do not buy Type I for a Lay-Z-Spa VI housing.
Measure before you switch packs with the VI size check. Decoding 58323-style codes? See 58323 and 58477 notes. Pool-side buyers can also use the pool replacement filter guide.
Next action
After the first successful fit, write the type letter on the pump with a paint pen so the next reorder is unambiguous. Dimensions vary by seller copy—keep figures approximate and trust your tape measure.