The AirFit N20 — the nasal mask that fits almost everyone
The InfinitySeal™ cushion was built from a large facial-scan dataset and it fits 99% of face shapes. It holds its seal for active sleepers and at higher prescribed pressures — which is why it’s the nasal mask most people get fitted with.
Genuine original equipment · no prescription needed for a mask · free U.S. shipping over $99.
Why the AirFit N20
Designed off thousands of facial scans to seal across an unusually wide range of faces — and to keep sealing when you move or when your pressure is high.
Wide-open visibility and a frame that flexes rather than clamps. Glasses and reading before bed both stay possible.
On and off in seconds, and you can get up at night without unfitting the whole mask.
Why it’s the default nasal mask
Two reasons clinics hand it out first.
A nasal mask seals around the nose, not inside it. It spreads the pressure over more surface than pillows do, which is why many people find it more comfortable at higher prescribed pressures — as long as you breathe through your nose while you sleep.
Will it fit my machine?
Standard connection — no adapter, no proprietary parts.
The AirFit N20 uses the universal 22 mm hose connection, so it works with standard CPAP and BiPAP machines. The one exception across our whole mask range is the AirMini, which needs its own mask-family setup pack — if that’s your machine, call us before you order.
Details
What’s included
- AirFit N20 frame in your selected size
- InfinitySeal™ nasal cushion (or all sizes with the Starter Pack)
- Headgear with magnetic clips
- Quick-release elbow
Replacement cushions are sold separately — they’re the part that wears out, and they cost a fraction of a new mask.
Genuine original equipment — and no prescription needed
This is genuine original equipment — not a copy and not a compatible-brand cushion. Masks, cushions, headgear and tubing don’t require a prescription in the U.S. — only the CPAP or BiPAP machine does. A copy cushion never seals like the original, and on a mask, sealing is the entire job.
Full specifications
| Type | Nasal mask |
| SKU | N20-AF |
| Cushion | InfinitySeal™ silicone |
| Fit coverage | Designed to fit 99% of face shapes |
| Options on this page | Small, Medium, Large, All Sizes, For Her Starter Pack |
| Compatibility | CPAP, APAP and BiPAP machines |
| Hose connection | Standard 22 mm |
| Best for | Nose breathers · higher pressures · all sleep positions |
| Sourcing | Genuine original equipment |
| Prescription | Not required for masks |
Frequently asked questions
Do I need a prescription for this mask?
Which option should I buy?
The clips are magnetic — is that a problem?
Nasal or nasal pillows — which one?
Will it work with my CPAP?
It leaks. What do I do first?
Not sure this is the right mask for you? Ask us.
Tell us how you sleep, whether you breathe through your mouth, and whether you have a beard or wear glasses — we fit masks every day and we’ll say so if this isn’t the one.

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