ResMed AirFit F40
ResMed's smallest tube-down full face mask featuring minimal-contact design that rests softly under your nose. Perfect for side sleepers and those who wear glasses in bed.
Ultra-Compact Design
AdaptiSeal Technology
Under-the-nose fit
Minimal. Maximized.
Ultra-compact design with maximum comfort and performance
Ultra-Compact Design
ResMed's smallest tube-down full face mask with minimal contact design that rests softly yet securely under your nose.
AdaptiSeal Cushion
Low-profile, soft silicone cushion that adapts to your face, providing comfort all night long with proven seal performance.
Freedom of Movement
Designed to let you sleep in any position and move freely throughout the night. Perfect for side sleepers and active sleepers.
Product Video
Watch detailed demonstrations and setup guides
How to fit your AirFit F40 mask
Technical Specifications
Complete product details, compatibility, and performance
General Specifications
| Product Name: | ResMed AirFit F40 Ultra-Compact Full Face Mask |
| Mask Type: | Full Face (Minimal Contact) |
| Design: | AdaptiSeal cushion technology |
| Target Users: | Side sleepers, glasses wearers |
| Key Feature: | Under-the-nose fit |
| Unique Design: | Smallest tube-down full face mask |
| Assembly: | Magnetic clips, fewer adjustment points |
| Manufacturer: | ResMed Ltd. |
Sizing & Fit
| Sizes: | Small/Wide, Medium, Large |
| Small/Wide: | Narrow to average facial features |
| Medium: | Average facial features |
| Large: | Wide facial features |
| Weight (S/W): | Approx. 85g |
| Weight (Medium): | Approx. 90g |
| Weight (Large): | Approx. 95g |
| Fit Success: | 100% seal and comfort achieved |
Performance
| Pressure Range: | 4–30 cmH2O |
| Max Flow: | 60 L/min at 20 cmH2O |
| Dead Space: | < 55ml |
| Leak Rate: | < 20 L/min |
| Sound Level: | Whisper quiet operation |
| Resistance: | < 0.4 cmH2O at 50 L/min |
| Clinical Success: | 100% seal achievement |
| Ease of Use: | 100% found easy to use |
Compatibility
| CPAP Machines: | All standard CPAP/BiPAP devices |
| Tube Connection: | Standard 22mm tubing |
| Elbow Type: | Tube-down design with swivel |
| Headgear: | Minimalist design with magnetic clips |
| Cleaning: | Daily water rinse recommended |
| Materials: | Medical-grade silicone |
| Latex-Free: | Yes |
| MRI Safe: | No (contains magnets) |
Frequently Asked Questions
Everything you need to know about the AirFit F40
The AirFit F40 is ResMed's smallest tube-down full face mask with a revolutionary minimal-contact design. It rests softly under your nose rather than over it, making it perfect for side sleepers and those who wear glasses in bed. The AdaptiSeal cushion technology adapts to your unique facial contours, and clinical studies show 100% of patients achieved both seal and comfort.
Absolutely! The AirFit F40 is specifically designed with side sleepers in mind. Its ultra-compact, minimal-contact design allows for freedom of movement throughout the night. The under-the-nose fit reduces bulk and pressure points that can be uncomfortable when sleeping on your side, making it an ideal choice for active sleepers.
Yes! The AirFit F40's under-the-nose design makes it compatible with wearing glasses in bed. Unlike traditional full face masks that can interfere with eyewear, the F40's minimal contact design sits below the nose bridge, allowing you to comfortably wear glasses for reading or watching TV before sleep.
The AdaptiSeal cushion features a low-profile, soft silicone design that automatically adapts to your unique facial contours. This adaptive technology ensures a secure, comfortable seal that maintains effectiveness throughout the night, regardless of sleep position or movement. The cushion's flexibility provides personalized comfort while preventing air leaks.
Regular replacement ensures optimal performance and hygiene:
AdaptiSeal Cushion
Replace every 1 month or when seal effectiveness decreases.
Frame System
Replace every 3 months or if damaged.
Headgear
Replace every 6 months or when straps lose elasticity.
Elbow Connector
Replace every 6 months or if swivel becomes stiff.
Daily Cleaning
- Disassemble mask components
- Rinse cushion and frame with warm water
- Wash with mild soap (no harsh chemicals)
- Rinse thoroughly to remove soap residue
- Air dry completely before reassembly
Weekly Deep Clean
- Soak all components in warm soapy water
- Use soft brush for thorough cleaning
- Rinse multiple times with clean water
- Inspect for wear or damage
- Ensure complete drying before storage
Discover Ultra-Compact Comfort
Experience the freedom of ResMed's smallest full face mask. Perfect for side sleepers and those seeking minimal contact design with maximum performance.