HEPA 4-pack filter refill for CS Ultra Resmed CPAP designed to maintain high-performance filtration for your CPAP system. The CSpring ULTRA 4-Pack provides a reliable CPAP HEPA filter refill solution using a triple-layer design with activated carbon and H13 HEPA filtration.

Keep your system performing at its best with filters engineered for improved air quality and extended service life. Each filter combines three layers to help capture particles, reduce odors, and support cleaner airflow during use. Designed for compatibility with ResMed AirSense and AirCurve 10 and 11 (with the CSpring ULTRA adapter), this CPAP HEPA filter refill offers an upgrade over standard flat filters.

Triple-Layer Filtration

Carbon Pre-Filter (2 mm): Captures coarse dust, hair, and helps reduce odors and VOCs

H13 HEPA Core: Traps ≥99.95% of particles ≥0.3 μm

Non-woven HEPA Composite Layer: Provides final-stage particulate filtration

With approximately 5× the surface area of standard filters, these pleated filters support consistent airflow and extended dust-holding capacity.

What’s Included

4× Triple-layer filters (Activated Carbon + HEPA + Composite)

Adapter not included (requires CSpring ULTRA housing)

Key Specifications

Dimensions: 45 mm × 15 mm × 18 mm

HEPA Surface Area: ~64.8 cm²

Airflow Support: Up to 100 L/min

Compatibility: ResMed AirSense / AirCurve 10 & 11 (with adapter)

Compared to standard filters, this CPAP HEPA filter refill provides higher filtration efficiency, added odor reduction, and multi-layer protection.

Usage Notes

Replace every 1–3 months, or sooner in dusty environments. Designed as supplemental filtration for comfort and cleanliness.

⚠️ 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. Always consult your physician before modifying CPAP equipment.