Which filter does my Lay-Z-Spa or SaluSpa take? Lookup by model and year

Reviewed November 1, 2026

Every inflatable Lay-Z-Spa in Bestway’s 2021 and 2025 catalogs, AirJet, AirJet Plus, HydroJet and HydroJet Pro alike, uses the Type VI cartridge, item 60311: 10.6 × 8.0 cm (4.2" × 3.1"), two per pack. It is sold as BW60311 on the Lay-Z-Spa UK store and 60311E on Bestway USA for SaluSpa; retailers also carry it as 58323, and Bestway’s 2013 manual printed it as 58239 (VI). The rigid-wall Monte Carlo is the exception and takes BWA0024. Bestway’s 2011 manual for the earlier round #54075 and oval #54090 lists a different cartridge, 58094. None of these is in the Unicel, Pleatco or Filbur catalogs.

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The cartridges, with equivalents

Bestway part numbers are from Bestway’s manuals, catalogs and stores. The Unicel 2026 guide, the Pleatco 2023 catalog and the Filbur catalog list no Bestway spa cartridge, so there is no aftermarket number to cross to.

Find your model and year

Bestway does not publish one chart for all years. This table puts the cartridge printed in each Bestway document next to the models that document covers.

The 2025 catalog’s compatibility matrix marks Filter Cartridge (60311) for every one of its hot tubs, including the ThermaCore Carrara and Toronto. The 2021 catalog lists “filter cartridge (VI)” in the box contents of each of its 14 models and sells the spare as 60311, “Contents: 2 filter cartridges”.

Filter housings are not all the same

The cartridge is shared, but the housing it sits in depends on the pump. If the housing is cracked or lost, order by pump type:

How often to change it

Bestway’s own advice has changed over the years. The 2011 manual says to clean the cartridge daily and replace it every two weeks. The 2013 manual says to check and clean it every day if needed and recommends changing it every three days, depending on use. Bestway USA’s current filter collection page says to clean or replace every two weeks. For the Monte Carlo, Lay-Z-Spa UK says the BWA0024 lasts at least three months. Compare these with other brands in how often to replace a hot tub filter.

Where the sources disagree

• Part number. The same Type VI cartridge appears as 58239 (2013 manual), 58323 / 58323E (UK and US retailers, including Home Depot’s 58323E-BW) and 60311 (2021 and 2025 catalogs, Bestway USA, Lay-Z-Spa UK). A UK retailer describes 58323 as replacing 58239 for 2012-onward Lay-Z-Spas. Bestway itself does not print a cross-reference between the numbers.
• Type IV or Type VI. Bestway USA’s SaluSpa Hot Springs AirJet bundle is titled “with Type IV Filter Cartridge 2-Pack”, but its description says it includes a Type VI cartridge and a replacement 2-pack of Type VI.
• 58094 as “Type II”. Bestway’s 2011 manual prints 58094 but not a type letter. The Type II name and the “pre-2012” cut-off come from retailers.
• HydroJet housing. Bestway USA sells both P05343 (SaluSpa and Coleman AirJet and HydroJet) and P07674 (SaluSpa HydroJet) as HydroJet filter sets.
• Replacement interval. Three days (2013 manual), two weeks (2011 manual and Bestway USA) and three months (Monte Carlo) all appear; see above.

Known limits

• We have Bestway documents for 2011, 2013, 2021 and 2025. Models sold only between those years are not listed by name.
• Coleman-branded SaluSpa tubs appear in Bestway USA’s housing listing (P05343) but in no Bestway cartridge list we found.
• No Bestway source gives an end-cap opening or a square-foot rating for Type VI.

How to confirm yours

1. Find the model name and the item number on the spa, the box or the manual, and match it in the table.
2. Inflatable Lay-Z-Spa from 2012 on: Type VI. Rigid Monte Carlo: BWA0024. Older tub with a cartridge inside the pump: check the number on the old cartridge for 58094.
3. See the Type VI cartridge page, the Bestway brand table and the Intex and Bestway filter guide.

Why one cartridge size can carry two different square-foot ratings: our explainer with Unicel’s pleat-count table.

Sources

1. Bestway: Lay-Z-Spa 2025 catalog (contents pages; Technical Features & Accessory Compatibility matrix; Filter Cartridge (VI) 60311, 10.6 × 8.0 cm)
2. Bestway: Lay-Z-Spa Collection 2021 catalog (model list; box contents; Filter Cartridge (VI) 60311)
3. Bestway: Lay-Z-Spa owner’s manual, Dutch edition for #54075 and #54090 (PDF dated July 2011; 58094 filter cartridge; clean daily, replace every two weeks)
4. Bestway: Lay-Z-Spa owner’s manual 2013, Vegas #54112 and Monaco #54113 (58239 (VI) cartridge, P6600 filter set, three-day interval)
5. Lay-Z-Spa UK: Official Lay-Z-Spa Filter Cartridge 2-pack, BW60311 (“all Lay-Z-Spa hot tubs (Except Monte Carlo)”)
6. Lay-Z-Spa UK: Filter Cartridge 12-pack, BW15196
7. Lay-Z-Spa UK: Monte Carlo Filter Cartridge, BWA0024
8. Lay-Z-Spa UK: Filter Housing Set for external-pump spas, B-BWP05343
9. Lay-Z-Spa UK: Filter Housing Set for UltraFit pump, BWP07805
10. Bestway USA: SaluSpa Type VI Filter Cartridge 2-pack, 60311E (Ø4.2" × 3.1")
11. Bestway USA: Hot tub filter cartridges collection (clean or replace every two weeks)
12. Bestway USA: SaluSpa Hot Springs AirJet bundle, BUN-6004 (title says Type IV; description says Type VI)
13. Bestway USA: SaluSpa, Coleman AirJet and HydroJet filter set, P05343
14. Bestway USA: SaluSpa HydroJet filter set, P07674
15. Bestway USA: SaluSpa UltraFit filter set, P07805
16. Splash and Relax (UK retailer): Type VI cartridge 58323: 2012-onward Lay-Z-Spas, replaces 58239
17. Splash and Relax (UK retailer): 58094 Type II cartridge for pre-2012 Lay-Z-Spas
18. Home Depot: Bestway Type VI 2-pack, 58323E-BW (retailer)
19. Unicel 2026, Pleatco 2023 and Filbur catalogs: checked; no Bestway spa cartridge listed

This page summarizes published catalogs and dealer fitment tables; always follow your own spa’s owner’s manual. See our disclaimer and methodology.