Are you struggling with uncomfortable CPAP masks, leaks, or interrupted sleep?
The ResMed AirFit F40 Full Face CPAP Mask is designed to deliver a comfortable and secure therapy experience — helping you sleep deeper and breathe easier.

Featuring ResMed’s adaptive InfinitySeal cushion, this full face mask adjusts to your face movements during the night, maintaining a reliable seal even at higher pressure settings. The QuietAir vent gently diffuses exhaled air, minimizing noise for a more peaceful sleep — for both you and your partner.

Whether you are a new CPAP user or upgrading your current equipment, AirFit F40 provides a combination of comfort, stability, and quiet performance that makes nightly treatment easier and more effective.

Key Features & Benefits

• Adaptive InfinitySeal Cushion – Helps reduce mask leaks and improve comfort

• QuietAir Vent Technology – Minimizes noise and airflow disturbance

• Full Face Design – Covers both nose and mouth, ideal for mouth breathers

• Easy Magnetic Headgear Clips – Simple to put on and take off

• Available in Multiple Sizes – Small Wide, Medium, Large, and Medium with Small Headgear

• Lightweight & Durable – Comfortable for nightly use

Who Should Use This?

✔ Mouth breathers
✔ Users with previous leak issues
✔ Side or combination sleepers
✔ Users requiring high pressure therapy
✔ Anyone seeking improved comfort and quieter CPAP therapy

FAQs 

Q: Is this mask suitable for mouth breathing?
A: Yes — the full face design covers both nose and mouth, making it ideal for mouth breathers.

Q: Will this mask fit my CPAP machine?
A: Yes — it is compatible with most standard CPAP and BiPAP machines that use standard tubing.

Q: How do I choose the correct size?
A: This mask is available in Small Wide, Medium, Large, and Medium with Small Headgear. Please refer to the size guide before ordering.

Q: Is this mask noisy?
A: No — the QuietAir vent technology significantly reduces noise and airflow disturbance.

Q: What happens if the mask doesn’t fit?
A: We offer easy returns and UK customer support to help you choose the right fit.