Keep your hot tub water clean, clear, and inviting with the ProAqua 5CH-45 45 Sq. Ft. Replacement Filter Cartridge. Designed for select Freeflow Spas®, Freeflow Legend®, Passport®, and compatible hot tubs, this premium replacement filter efficiently captures dirt, debris, body oils, and contaminants to maintain optimal water quality and protect your spa equipment.
Built with high-quality pleated filtration media, the 5CH-45 provides excellent flow characteristics and reliable filtration performance. Its 1.5" Male Pipe Thread (MPT) connection ensures a secure fit in compatible spa filtration systems while helping extend the life of pumps, heaters, and circulation components.
Key Features
✔ 45 square feet of filtration area
✔ Premium pleated filtration media
✔ Improves water clarity and cleanliness
✔ Captures dirt, oils, and fine debris
✔ OEM-quality replacement performance
✔ 1.5" Male Pipe Thread (MPT) connection
✔ High-flow core design
✔ Durable construction for long service life
Specifications
| Specification |
Details |
| Filter Area |
45 Sq. Ft. |
| Diameter |
5-5/16" |
| Length |
10" |
| Top Opening |
2-1/8" Open |
| Bottom Style |
1.5" Male Pipe Thread (MPT) |
| Pleat Count |
Approx. 225 |
| Media Weight |
3 oz. |
| Filter Type |
Replacement Cartridge |
Compatible Spa Brands & Models
This filter is commonly used in:
Freeflow Spas®
- Freeflow Legend
- Freeflow Passport
- Select Freeflow Spa Models utilizing the 5CH-45 filter
Freedom Spas®
- Select Freedom Spa models
Other Compatible Applications
- Various spas utilizing the Unicel 5CH-45 filter configuration
- Select rotational-molded spa systems with 1.5" MPT filter mounting
Always verify dimensions, thread type, and filter configuration before ordering.
Cross Reference Part Numbers
This filter is compatible with and replaces:
- ProAqua 50452
- Unicel 5CH-45
- Pleatco PFF50P
- Pleatco PFF50P4
- Filbur FC-2401
- Darlly 50452
- Baleen AK-90108
- Excel XLS-530
- Pure N Clean PC-2401
- Master Deluxe M50452
- SD-00363
Why Replace Your Hot Tub Filter?
Regular filter replacement helps:
- Improve water clarity
- Increase filtration efficiency
- Reduce strain on pumps and heaters
- Improve sanitizer effectiveness
- Extend the life of spa equipment
- Maintain proper water circulation
For best results, rinse your filter every 2 to 4 weeks and perform a deep cleaning every 3 to 4 months. Replace the cartridge every 12 months, or sooner in high-use spas.
Pro Tip
Keep a second filter on hand and rotate cartridges during cleaning cycles. This helps maintain peak filtration performance and can significantly extend filter lifespan.
