ResMed
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ResMed
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A Reliable Nasal Seal, an Open Field of Vision and Minimal Facial Contact
The ResMed AirFit N20 CPAP Nasal Mask is designed to deliver reliable sleep therapy with exceptional comfort and a secure fit. Its lightweight frame, soft plush headgear and adaptive InfinitySeal™ silicone cushion work together to provide a comfortable seal while minimising facial contact. The under-eye frame design leaves your field of vision open, so you can comfortably read, watch TV, or wear glasses before bedtime.
The InfinitySeal cushion is engineered to adapt to a wide range of facial shapes and to hold its seal across different therapy pressures — including the higher end of the range, where nasal masks are often most difficult to keep sealed.
Built for everyday convenience, the AirFit N20 features magnetic headgear clips for quick fitting and removal, a quick-release elbow for easy disconnection from your CPAP tubing, and a flexible short tube that helps reduce hose drag during sleep. With its simple three-piece construction, the mask is easy to clean, maintain, and reassemble, while its quiet venting system helps create a more peaceful sleeping environment.
*This mask contains magnets. Please read the safety notice above and the magnet contraindications document before use.
| Specification | Details |
|---|---|
| Brand | ResMed |
| Manufacturer | ResMed |
| Mask Type | Nasal CPAP Mask |
| Cushion Material | Silicone (InfinitySeal™) |
| Available Cushion Sizes | Small, Medium, Large & Small For Her |
| Therapy Pressure Range | 4–30 cm H₂O |
| Sound Pressure Level | 16 dBA (at 1 metre) |
| Sound Power Level | 24 dBA |
| Connection Size | Standard 22 mm |
| Weight | Approximately 150–200 g |
| Magnetic Components | Yes — magnetic headgear clips (see safety notice) |
| Operating Temperature | +5°C to +40°C |
| Storage Temperature | -20°C to +60°C |
| Impedance | 0.3–1.3 cm H₂O |
| Expected Lifespan | Approximately 5–6 months (depending on use and care) |
| Intended Use | Treatment of Obstructive Sleep Apnoea (OSA) in Adults |
| Warranty | Manufacturer Warranty (where applicable) |
The AirFit N20 is available in Small, Medium, Large and Small For Her cushion sizes. Use the printable fitting template in the Helpful Documents section below to determine your ideal fit before ordering a replacement cushion.
Regular care keeps your AirFit N20 hygienic, comfortable and sealing reliably.
The ResMed AirFit N20 combines comfort, performance and ease of use to support effective nightly CPAP therapy. Its minimal-contact design, reliable InfinitySeal cushion and quiet operation help create a comfortable sleep experience, while the open field of vision lets you relax, read or watch TV before bedtime without obstruction. It remains one of the most widely fitted nasal masks in the UK for good reason.
This mask is a medical device intended for the treatment of obstructive sleep apnoea under the direction of a qualified healthcare professional, and pressure settings must be prescribed by your clinician. This mask contains magnets, which may interfere with certain implanted medical devices or metallic implants. Please read the user guide and the magnet contraindications document fully before use, and consult your clinician to confirm this mask is appropriate for you and for your prescribed therapy. Never block or cover the vent holes, and follow the manufacturer's cleaning and replacement schedules.
Download the official ResMed documents for your AirFit N20 nasal mask, including cushion sizing, cleaning, device compatibility and magnet safety information.
🛡️ For Machines : Every eligible product you purchase is backed by a 2-year manufacturer warranty, covering manufacturing defects and workmanship under normal use.
⚠️ For Masks & Accessories : CPAP
masks and mask components are covered by a 6-month warranty against
manufacturing defects only.
*Not covered: Normal wear and tear, misuse, improper cleaning, accidental
damage, or unauthorised modifications.
🚚 Free Next-Day UK Delivery : Orders placed before 3:00 PM GMT, Monday to Friday, are dispatched the same day using our next-day delivery service.
📖 Read More — To view our detailed Shipping policy
↩️ 30-Day Easy Returns : We offer a 30-day return policy on eligible items that are unused, unopened, and in their original sealed packaging. For hygiene and safety reasons, opened or used CPAP Machines, masks, cushions, and other personal-use accessories cannot be returned or replaced.
📖 Read More — To view our detailed Returns & Exchange policy
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