Maintain proper water flow and filtration performance with the ProAqua Replacement Rainbow Dynamic IV Filter Skimmer Basket, a direct replacement for the popular Pentair® / Rainbow® R172661DG basket assembly. Designed for use in Rainbow Dynamic IV spa and hot tub filtration systems, this basket helps collect larger debris before it reaches the filter cartridge, improving filtration efficiency and protecting your spa equipment.
Often referred to as a Lily Basket with Restrictor Assembly, this component is one of the most commonly used filter baskets in hot tubs equipped with C-4950, C-4326, and C-4335 filter cartridges. The integrated restrictor helps regulate water flow through the filtration system, ensuring optimal performance while reducing strain on pumps and circulation components.
Key Features
✔ Genuine-style replacement for Pentair® / Rainbow® R172661DG
✔ Commonly used with C-4950, C-4326, and C-4335 filter cartridges
✔ Helps trap larger debris before it reaches the filter cartridge
✔ Integrated restrictor assembly for proper water flow control
✔ Improves filtration efficiency
✔ Helps protect pumps and circulation equipment
✔ Easy drop-in replacement
✔ Suitable for hot tubs and spas using Rainbow Dynamic IV systems
Specifications
| Specification |
Details |
| Part Number |
788379505325 |
| OEM Number |
R172661DG |
| Brand Compatibility |
Pentair® / Rainbow® |
| Basket Style |
Lily Basket with Restrictor Assembly |
| Diameter |
6-1/4" |
| Overall Height |
3-1/2" |
| Material |
Durable Chemical-Resistant Plastic |
| Available Colors |
White, Grey, Black |
Important: Rainbow Dynamic baskets are available in multiple sizes. Always verify dimensions before ordering.
Compatible Filter Cartridges
This skimmer basket is commonly used with:
-
Unicel C-4950
-
Pleatco PRB50-IN
-
Filbur FC-2390
-
Darlly 40506
-
Unicel C-4326
-
Pleatco PRB25-IN
-
Filbur FC-2375
-
Darlly 40260
-
Unicel C-4335
-
Pleatco PRB35-IN
-
Filbur FC-2385
-
Darlly 40353
Compatible Filtration Systems
Designed for use in:
Pentair® Rainbow Dynamic IV Series
- DFML 25C
- DFML 25
- DFML 35
- DFML 50
Common Spa Brands Utilizing Rainbow Dynamic Systems
- Bullfrog Spas
- Clearwater Spas
- Leisure Bay Spas
- Sun & Soul Spas
- Coast Spas
- Viking Spas
- Select Waterway-equipped spas
- Various private-label hot tub manufacturers
Compatibility may vary by model year. Always compare basket dimensions before ordering.
Why Replace Your Filter Basket?
Over time, filter baskets can become brittle, cracked, warped, or damaged due to heat, chemicals, and regular use. Replacing a worn basket helps:
- Maintain proper water circulation
- Improve filtration performance
- Prevent debris from bypassing the filter system
- Protect pumps and heaters
- Ensure proper filter cartridge positioning
- Extend equipment life
Installation Instructions
- Turn off spa power.
- Remove the filter lid or weir assembly.
- Lift out the existing basket.
- Insert the new Rainbow Dynamic IV basket.
- Verify proper fit and filter cartridge alignment.
- Restore power and operate normally.
No tools are required for installation.
Pro Tip
When replacing your filter cartridge, inspect the skimmer basket for cracks, warping, or damaged restrictors. Many water-flow and filtration issues can be traced back to worn basket assemblies rather than the filter itself.
