Cspring™
CS ULTRA 4-Pack Refill | Premium HEPA + Carbon Filters
CS ULTRA 4-Pack Refill | Premium HEPA + Carbon Filters
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**Adapter not included. This refill pack is intended for use with the CSpring ULTRA housing system.**
CSpring ULTRA – 4-Pack Refill Bundle
High-Efficiency Triple-Layer Filters for ResMed AirSense 11
Keep your CPAP system performing at its best with the CSpring ULTRA 4-Pack Refill. Each replacement filter features our signature triple-layer design—a carbon pre-filter, H13 HEPA core, and final-stage non-woven filter—for enhanced air purification and extended filter life.
✅ Includes: 4× Triple-layer filters (Activated Carbon + HEPA + Non-woven HEPA Composite)
✅ Compatible with: ResMed AirSense / Aircurve 10 and 11 (via CSpring ULTRA adapter)
✅ Designed for: Up to 100 L/min airflow and user-level air purification
✅ Not just machine protection—air purification for you
Adapter not included. This refill pack is intended for use with the CSpring ULTRA housing system.
- Carbon Pre-Filter (2 mm): Captures coarse dust, hair, and neutralizes odors and VOCs.
- H13 HEPA Filter Core: Traps ≥99.95% of particles ≥0.3 μm, including allergens, bacteria, and fine dust.
- Non-woven HEPA Composite Fiber Post-Filter: Ensures final-stage of particulate filtration before entering CPAP.
Specifications:
| Dimensions | 45 mm × 15 mm × 18 mm |
| Pleats | 4 pleats (6 folds along 15 mm side) |
| HEPA Surface Area | ~64.8 cm² (pleated media) |
| Airflow Support | Up to 100 L/min |
| Dust Holding | Extended due to large surface area |
| Compatibility | ResMed AirSense / Aircurve 10 and 11 |
🔄 Compared to Standard ResMed Filter:
| Feature | ResMed OEM Filter | CSSpring ULTRA Filter |
|---|---|---|
| Filtration Class | Basic (non-HEPA) | H13 HEPA + Carbon |
| Efficiency | ~60–80% (≥5 μm) | ≥99.95% @ 0.3 μm |
| Odor/VOC Removal | ❌ | ✅ 2mm (activated carbon layer) |
| Surface Area | ~13 cm² (flat) | ~64.8 cm² (pleated) |
| Protection Level | Basic device protection | User-level air purification |
| Filter Layers | 1–2 | 3 layers |
Usage Notes:
- Replace every 1–3 months, or sooner in dusty environments.
- Designed as supplemental filtration. Not a medical replacement.
- Not FDA-cleared; consult your physician before modifying CPAP equipment.
⚠️ Notice:
This product is not manufactured by or affiliated with ResMed. It is not FDA-cleared and is not intended to diagnose, treat, cure, or prevent any disease. Use only as a supplemental air filter for general comfort and cleanliness. Always consult your physician before modifying CPAP equipment or therapy.
