Keep your hot tub water crystal clear with the ProAqua 40 Sq. Ft. Replacement Filter Cartridge. Designed to capture dirt, debris, body oils, and other contaminants, this premium replacement filter helps maintain superior water quality while reducing strain on your spa's circulation and heating systems.
Manufactured with durable pleated filtration media, the C-4339 provides excellent water flow and efficient filtration performance for a cleaner, healthier spa experience. Whether you're replacing a worn-out cartridge or stocking up on spares, this filter delivers dependable OEM-quality performance for a wide range of hot tubs and spas.
Key Features
✔ 40 square feet of filtration area
✔ Traps dirt, debris, oils, and contaminants
✔ High-quality pleated filter media
✔ Improves water clarity and circulation efficiency
✔ Easy to remove, clean, and replace
✔ OEM-quality replacement performance
✔ Durable construction for long service life
Specifications
| Specification |
Details |
| Filter Area |
40 Sq. Ft. |
| Length |
11-1/4" |
| Diameter |
4-15/16" |
| Top Opening |
2-1/8" Open |
| Bottom Opening |
2-1/8" Open |
| Filter Type |
Replacement Cartridge |
Compatible Spa Brands & Models
This filter is commonly used in select models from:
- Accent Spas
- Coleman Spas
- Dynasty Spas
- Millennium Spas
- Superior Spas (Avalon Series)
- Waterway Plastics Systems
- Wind River Spas
- MAAX Spas
- Cal Cooperage Spas
- Coast Spas
- Arctic Spas (select models)
Always verify dimensions and filter end-cap style before ordering.
Cross Reference Part Numbers
Also compatible with:
- ProAqua AP40403
- Unicel C-4339
- Pleatco PWW40
- Filbur FC-2915
- Darlly 40403
- Waterway 817-0040
- Waterway 817-0400
- Coleman 100585
- Coleman 3301-2241
- Aladdin 14011
- APCC7129
- SD-00235
- AK-3016
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 consistent water flow
For best results, rinse your filter every 2 to 4 weeks and replace it every 12 months or as recommended by your spa manufacturer.
Pro Tip
Keep a second filter cartridge on hand. Rotating filters during cleaning allows each filter to dry completely between uses, helping maximize filtration performance and extend service life.
