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Home > CPAP Masks > Full Face CPAP Masks > AirFit F40 Full Face CPAP Mask - ResMed

AirFit F40 Full Face CPAP Mask - ResMed

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ResMed AirFit F40 Full Face Mask

Experience more sleeping freedom and comfort with the ResMed AirFit F40 Full Face Mask. Designed for maximum side-sleeping comfort, the all-new AirFit F40 is ResMed’s smallest tube-down full face mask. 

Its soft, adaptable silicone cushion conforms to your face, while the flexible frame and adjustable headgear keep the CPAP mask securely in place. A short tubing with a 360° swivel at the front lets you move freely without fear of dislodging your mask.


  • Under-the-nose cushion
  • Minimalist design with an open line of sight
  • Fully silicone cushion for a soft yet secure seal
  • Snap on/off magnetic clips for quick fitting
  • Glasses-friendly
  • Quick-release elbow for easy connection/disconnection
  • Short tubing for more sleeping freedom

100% Silicone AdaptiSeal™ Cushion
Made entirely of soft silicone, the AirFit F40 cushion gently rests under your nose and over your mouth for a secure and comfortable fit throughout the night.

Flexible & Low-Profile Frame
The AirFit F40’s lightweight and flexible frame is padded where it touches the cheeks to prevent CPAP mask marks on your face. Its open-faced design lets you wear glasses without any interference. 

Simple & Secure Fit
Featuring just four adjustment points and easy-to-use magnetic clips*, the AirFit F40 headgear offers a quick and secure fit every time.

*ResMed recommends keeping magnetic clips at least 6 inches (150 mm) away from implants or medical devices as magnetic fields may interfere with the function of medical implants. 

Move Freely, Sleep Soundly
The AirFit F40's short, flexible tubing allows for greater range of motion while you sleep. This design provides more slack in the tubing, offering greater comfort in any position. The short tubing connects to the mask frame via a quick-release elbow so you can easily connect and disconnect from your CPAP or BiPAP machine during the night.

Located inside the F40 cushion is the QuietAir™ vent ring, which disperses air away from you and your bed partner for a peaceful night’s sleep. This vent ring is also removable for easy cleaning.  

Multiple Headgear & Cushion Sizes
With a variety of headgear (small, standard, large) and cushion (small-wide, medium, large) sizes available, it’s easy to find your perfect F40 Full Face Mask. 


What machines are compatible with the ResMed AirFit F40? 
The AirFit F40 Full Face Mask is compatible with all CPAP and BiPAP machines with the exception of the ResMed AirMini Travel CPAP. If using the F40 mask with a ResMed machine, please select “Pillows” in the mask setting option. 

How do I find the size of my AirFit F40 headgear?
The size (small, standard, or large) is conveniently located on the back of the headgear's colored neck pad. First-time F40 users should start with the standard size and size up or down as needed. 

How do I find the size of my AirFit F40 cushion?
The cushion size (SW, M or L) can be found on the bottom right side of the cushion. To find your best-fitting F40 cushion size, use the AirFit F40 Fitting Template. 

  1. Stand in front of a mirror and hold the template under your nose.
  2. Align your nose with the blue Medium box on the template. If your entire nose fits within the blue box, choose medium as your F40 cushion size. 
  3. If your nose does not fit within the blue box, align your nose with the purple Small-Wide and gray Large boxes.
  4. Select the cushion size that allows your entire nose to fit comfortably inside. If your nose fits into multiple boxes, choose the size that best accommodates your nose width.

How do I clean my AirFit F40 Full Face Mask? 
Daily Cleaning (Cushion, Vent Ring, Tubing & Elbow)
Weekly Cleaning (Headgear & Frame)

  1. Disassemble the mask — refer to the user guide for detailed instructions.
  2. Fill a basin with warm water and add a mild soap solution. Submerge the cushion, vent ring, short tubing, and elbow for cleaning.
  3. Gently shake the parts in the water and use a soft-bristled brush to clean the vent ring holes thoroughly.
  4. Rinse all components thoroughly under running water. Air dry the components away from direct sunlight.
64600, 64601, 64602, 64603, 64604
Pressure Range
4-30 cm H2O
90 days against manufacturer defects
Tube Connection
Front of the face
Mask Type
Full Face
Headgear Clips and Type
Yes; Magnetic Clips
Headgear Size with Mask
Standard, Small or Large
Other Headgear Sizes Available
Other Headgear Styles Available
FitPack Available
Active Sleeper
Stomach Sleeper
Glasses Friendly
Reduces Claustrophobia
Specifically Designed For Women
Facial Hair
Cushion Interchangeable with Different Type
  • Frame
  • Short tubing with elbow
  • Cushion in the selected size (small-wide, medium, large)
  • Headgear in the selected size (standard, small, large)
  • 1 pair of magnetic clips
Joseph H
ResMed F40 mask
I've used CPAP masks for ten years, and I've tried most of the major masks. The new ResMed F40 is by far the most stable and comfortable mask I've worn. I'm a restless sleeper, but it stays in place and maintains a good seal.
Displaying 1 to 1 (of 1 reviews)
Result Pages:  1 
Question Hi I am in Cyprus and tried to order 2x F40 masks using your offer but it doesn’t seem to let buy them. Could you advise if there is a way I can buy please?
Sorry we cannot ship ResMed products outside the US. You will have to use a US address and get it shipped to you!
Posted: 04/14/2024
Question I received the offer via email but do not see an option to purchase the standard headgear with a small mask. Is that available in the promo?
It is only available in the size:
Small-Wide Cushion/Standard Headgear - $99.00, SKU 64600
Posted: 04/13/2024
Displaying 1 to 2 (of 2 questions)
Result Pages:  1 
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