Sundance MicroClean Ultra II Inner Filter for 880 Series (6473-453S) — White microfiber, up to 6-month life

Sundance Spas MicroClean Ultra II Filter Inner (6473-453S) is the OEM inner microfiber cartridge designed for Sundance 880 Series 2024+ that captures ultra-fine particles to help keep spa water clear.

This replacement inner cartridge is the 2024 update from Sundance, engineered specifically for use with the MicroClean filtration system in the 880 Series hot tubs. It pairs with the corresponding outer filter (6473-452S) and works with Sundance SPAPURITY mineral sanitizer to reduce debris, oils, and microscopic contaminants. Lightweight and simple to swap, the inner filter focuses on trapping the smallest solids so the mechanical filtration does more of the heavy lifting before chemical sanitizers work.

How does the MicroClean Ultra II inner filter improve water clarity?

The inner filter is made from spun-bound microfiber that captures particles far smaller than standard pleated media. By removing fine solids and organic matter before they circulate, it reduces cloudiness and helps maintain a cleaner surface.

• Spun-bound microfiber traps microscopic particulates
• Works alongside the outer filter for two-stage filtration
• Prevents tiny debris from reaching pump and sanitizer systems

How often should I replace this inner cartridge?

Sundance rates the MicroClean inner cartridge for up to six months of typical use, but actual life depends on bather load, water chemistry and environmental debris. Check the filter every month and replace when you see reduced flow or visible discoloration.

• Typical longevity: up to 6 months under normal use
• Inspect monthly for clogging, tearing, or staining
• Replace sooner with heavy use, pets, or dusty outdoor locations

Is this filter compatible with my spa and other Sundance products?

This 6473-453S inner cartridge is specifically made for the Sundance 880 Series 2024 and newer models and must be used with the matched outer filter 6473-452S. For best performance, pair it with SPAPURITY mineral sanitizer as recommended by Sundance.

• Fits Sundance 880 Series model year 2024 and later
• Designed to be used together with outer filter 6473-452S
• Recommended for use with SPAPURITY mineral sanitizer

How do I change the MicroClean inner cartridge?

Replacing the inner cartridge is a quick maintenance task: remove the filter from its housing, pull out the old inner element, insert the new MicroClean inner component, and reinstall the filter assembly. No special tools are required, and a routine swap keeps flow rates steady and filtration efficient.

• Turn off spa circulation before removing filter
• Pull out the outer filter, replace inner 6473-453S, then re-seat
• Restart circulation and verify normal flow and no leaks

Who is this for: Owners of Sundance 880 Series hot tubs (2024 and newer) who want OEM-grade, two-stage filtration to capture very fine particles and protect spa equipment. It's ideal for households that use their spa regularly or want lower maintenance balancing between mechanical filtration and mineral sanitizers. Choose this genuine Sundance inner cartridge if you prefer factory-fit replacements and consistent performance with the SPAPURITY system.