Filter Cartridges
Pleated and mesh-surface cartridge options for your filter housing, dimensions and connection requirements.
Explore the options.
Start with the application and the product direction you want to explore.
Pleated cartridges
A folded filter surface. Discuss the media specification, overall dimensions, end caps and connection details required by your system.
Mesh-surface cartridges
A smooth filter surface with a mesh pattern, following the product reference supplied. The media, support structure and fit still need to be specified for the proposed cartridge.
Melt-blown cartridges
A depth-loading media: fine melt-blown microfibre through the full wall, so particles are held inside the media rather than on the surface. Chosen where fine turbidity and oils load a pleated surface too quickly. Media grade, dimensions and end caps are confirmed per enquiry.
What decides a cartridge fit.
Use the following details to define a proposal around your application.
Overall dimensions
Cartridge length, diameter and the space available within the housing.
Top and bottom connections
Opening, thread, handle and other end-cap features shown in the existing part or drawing.
Filter media
The required media construction and any filtration criteria in your specification.
Fit and handling
Housing interface, installation clearance and how the cartridge is fitted and removed.
How the old cartridge is read.
Cartridge references are matched on measurements and end details. Two cartridges can look the same and still not be interchangeable.
What to have ready
- Body length without the end caps
- Outside diameter at the widest point
- Top end: style, opening and any threads
- Bottom end: gasket, guide or open core
- Anything that sticks out: by-pass valve, locator tab, screen
- A photo of the cartridge standing on a flat surface
Configuration, considered together.
Discuss pleated or mesh-surface cartridge construction, cartridge dimensions and end-cap details. The proposed specification should be checked against your housing and application.
What to measure before ordering.
Send the current filter reference, top and bottom photographs, overall dimensions, opening or thread measurements and indicative quantities.
Reference data
Length, diameter and end detail.
Two tables sit behind every filter cartridge quotation: the dimensions that define the fit, and the reference numbers our customers already buy against. Send whichever you have and we cross-check the rest.
| Field | What we confirm |
|---|---|
| Length | Overall length: end cap to end cap, excluding handles and protruding threads unless the reference specification says otherwise |
| Diameter | The widest point of the media pack |
| Top hole | Closed cap, or an open hole quoted with its diameter |
| Top style | Flat, handle or open — how the top end is finished |
| Bottom hole | Closed cap, open hole or threaded base |
| Bottom style | Open, threaded or closed — how the base seats |
| Area (sq. ft) | Media area, quoted in sq. ft or m² |
| Construction | Media form and pleat or mesh layout |
| Media and micron rating | Filter fabric and the retention rating that goes with it |
| Housing fit | The housing, skimmer or standpipe the cartridge seats into |
| Media weight | Media weight as quoted by the mill, in Oz or g |
| Reference system | Why it helps |
|---|---|
| OEM number | The number moulded or printed on the end cap |
| Aftermarket equivalent | Pleatco, Unicel, Darlly or Filbur references |
| Hot tub brand and model | Places the cartridge in a known housing |
| Dimensions | Works where no number is legible |
Cross-reference values are confirmed per enquiry rather than published as a fixed list, because one cartridge body is often sold under several numbering systems. We compare your reference against the proposal before you order.
Questions about filter cartridges.
Can the two filter types be substituted directly?
Not on appearance alone. Housing fit, media requirements and the application need to be checked.
Can you match an existing cartridge?
Share the current reference and measurements. We can use them to define the comparison and sample requirements.
How is a spa filter cartridge matched?
By body length, outside diameter and both end details. Construction and fit are confirmed with each proposal.
Which cartridge constructions do you supply?
Pleated and mesh-surface cartridges are listed as category references. Other constructions are confirmed per enquiry.
Can filter cartridges be supplied as OEM/ODM?
Yes. OEM and ODM support is available; branding, packaging and order quantity are agreed before production.
How do I confirm the fit before ordering?
Send the existing cartridge reference or its dimensions. We compare them against the proposal before you place an order.
Related components.
Explore the parts that may sit alongside this requirement.
Related reading: how to identify a spa filter cartridge, and the replacement and sizing guide.
Related reading: identifying the filter housing before ordering.
Talk to us about this product
Send the product, the target quantity and your destination market — we aim to respond within one working day.