Description
Overview
This disposable inner filter cartridge is designed for Sundance 880 Series spas that run the Ultra Micro Clean system. It sits inside the main filter and handles the finer particles that the outer cartridge does not catch. When this inner filter is fresh, water stays clearer and the main filter does not clog as quickly. Because it is disposable, it is replaced rather than cleaned.
Key Features
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Inner disposable filter for Sundance 880 Series spas
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Designed for Ultra Micro Clean filtration systems
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Helps capture finer debris before it reaches the main filter
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Simple drop in replacement with no cleaning required
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Supports consistent water clarity and circulation
Where to Use It
This filter is used inside Sundance 880 Series spas that are set up with the Ultra Micro Clean system. It works alongside the main outer cartridge and is not intended to be used on its own. It suits spa owners who prefer replacing the inner filter rather than rinsing or soaking it.
How to Use
Turn the spa off before opening the filter compartment. Remove the used inner cartridge and dispose of it. Insert the new filter into the housing, making sure it sits correctly before refitting the main filter. Once everything is back in place, restart the spa and check that water flow looks normal.
Compatible Systems
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Sundance 880 Series spas
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Sundance Ultra Micro Clean systems
Appearance
Slim cylindrical disposable filter cartridge with open ends designed to slide inside the main filter assembly.
Specifications
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Outside diameter: 102 mm
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Length: 472 mm
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Bottom end cap: 63 mm bevelled hole
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Top end cap: 75 mm hole
Pro Tip
If your spa pressure rises faster than usual or the water looks dull even after cleaning the main filter, the inner cartridge is often the cause. Replacing it early can bring the system back to normal without touching the outer filter.
FAQs
Is this filter washable or reusable?
No. This is a disposable inner cartridge and should be replaced when dirty.
Which spas use this filter?
It is designed for Sundance 880 Series spas with the Ultra Micro Clean system.
How often should it be replaced?
Replacement depends on spa use, but many owners change it every three to four months.
Can I run the spa without this inner filter?
It is not recommended. The system is designed to use both the inner and outer filters together.
Do I need tools to replace it?
No tools are needed. It is a simple drop in replacement.