The ResMed AirFit F20 is a leading full-face CPAP mask — it covers both the nose and mouth, making it ideal for mouth-breathers or anyone with nasal congestion or on higher pressures. It seals with ResMed's InfinitySeal cushion across all pressures, with a QuietAir diffuser vent (~21 dB), magnetic clips and a quick-release elbow. Available in Small, Medium and Large cushions.
The AirFit F20 is the go-to full-face mask when a nasal mask isn't enough — for people who breathe through their mouth during sleep, get blocked noses, or need higher therapy pressures where a full-face seal is more reliable. The InfinitySeal cushion adapts to different face shapes and holds a seal as you move.
The QuietAir woven-mesh vent diffuses exhaled air softly rather than blasting it in one jet, so it's quiet for you and a bed partner. Magnetic clips make it easy to put on and take off, and the quick-release elbow lets you disconnect without removing the mask. It's forehead-free for a clear line of sight.
Full-face masks especially reward a proper fit — the coach sizes the cushion to your face; the official ResMed template below is the starting reference.
Specifications
| Mask type | Full-face (covers nose and mouth) |
| Cushion | InfinitySeal silicone; sizes Small, Medium, Large |
| Venting | QuietAir diffuser vent (~21 dB) |
| Features | Magnetic clips, quick-release elbow, forehead-free frame |
| Compatibility | Standard CPAP/bilevel machines (22 mm hose). Needs an adapter for AirMini |
What's in the box
- Frame + elbow
- Standard headgear
- One full-face cushion (size per pack)
- Magnetic clips
- User guide
Warranty
90-day manufacturer warranty on the mask system (manufacturing defects only, via the authorized service centre).
Sizing
The F20 fit template measures the vertical distance from the nose bridge to under the chin, mapped to Small / Medium / Large. Print at 100% scale. As with all masks, a coach fitting is the reliable route.
Official ResMed fit guide: ResMed AirFit F20 fitting template (PDF, mm)
Why buy from Morpheus Healthcare
- Mask fitting by a certified sleep coach — critical for a full-face seal.
- Genuine ResMed mask with 90-day defect warranty.
- Advice on cushion replacement to keep the seal reliable.
Frequently asked questions
When should I choose a full-face mask like the F20 over a nasal mask?
If you breathe through your mouth during sleep, often have a blocked nose, or are on higher pressures — a full-face mask seals over both nose and mouth. The coach helps you decide.
What sizes does the F20 come in?
Cushions in Small, Medium and Large.
Is it noisy for my partner?
No — the QuietAir vent diffuses exhaled air softly at around 21 dB.
How do I find my size?
Start with the official ResMed fit template above (printed at 100%), then confirm with a coach fitting for accuracy.
Does the F20 work with my machine?
Yes, with any standard CPAP or bilevel machine. The AirMini travel machine needs an adapter.
Can I get up at night without taking the whole mask off?
Yes — the quick-release elbow disconnects the tube while the mask stays on.
What's the warranty?
90 days from ResMed for manufacturing defects.
