AirFit™ N30i QuietAir™ Cushion

£45.00 Plus VAT at applicable rate. Excluding delivery.
Free delivery for orders over £150
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Replacement cushion for the AirFit N30i nasal CPAP mask. When your mask cushion gets worn or damaged, save money and reduce waste by choosing to buy a replacement cushion. 

The AirFit N30i under-the-nose cushion is available in four different sizes: 

  • Small (S) 
  • Small wide (SW) 
  • Medium (M) 
  • Wide (W) 

This nasal cushion features an integrated QuietAir vent that gently diffuses exhaled air1 and emits just 21 dBA2 for a relaxing environment in the bedroom. 

If you want to try a nasal pillows cushion, you can use an AirFit P30i cushion with your AirFit N30i conduit frame

Products available on this store are intended for sale in the United Kingdom only. 


Replacement cushion for AirFit N30i Freedom nasal mask. Save money and reduce waste by choosing a spare part when it’s time to replace worn or damaged mask components.  

  • Under-the-nose cushion means no red marks on the nasal bridge 
  • Supple silicone cushion, soft chassis: Designed to fit your face snugly for a good seal throughout the night. 
  • Integrated QuietAir vent: exhaled air is gently diffused to limit noise output. 
  • Easy to replace 
  • 4 sizes available: Small, Medium, Small Wide and Wide. The Advice tab has information to help you choose the right size of AirFit N30i QuietAir cushion. 

Good to know: you can use an AirFit N30i nasal cushion with your AirFit P30i conduit frame. The AirFit P30i and AirFit N30i use the same conduit frame. This means you can switch easily between a nasal cushion and a nasal pillows cushion any time you want to alter your mask seal or change contact points.

Please refer to the user guide for relevant information related to any warnings and precautions to be considered before and during use of the product. 

Ask your doctor about using this medical device to treat your obstructive sleep apnoea. 

1. ResMed external 14-day clinical study of 23 ResMed patients, conducted between 30/05/2018 and 22/06/2018. Data on file; ID A4387859. 

2. Sound power level of 21 dBA – refer to AirFit N30i user guide. 

Technical details

Manufacturer ResMed
Type Cushion
Size Small Wide, Wide, Small, Medium
Colour Transparent
Not made from latex Yes

Please see below for expert tips on keeping your equipment in good condition. 

Sizing the Cushion: 

  • Step 1 - download the Sizing Template and print it to scale.  
  • Step 2 - place the template below your nose, perpendicular to your face. If you have a narrow nose, start with the blue/red side of the template. If you have a wide nose, start with the black/purple side of the template. 
  • Step 3 - look into a mirror and assess whether your nose falls inside or outside the margins on the template. If you are between two sizes, choose the larger size. 

If you don't want to use the sizing template, refer to our sizing guidelines in the table below. Use a straight ruler to measure the width of your nose. 

'How to' videos: 

Note: These videos show a version of the AirFit N30i that may differ from your version. 

Refer to the AirFit N30i user guide for detailed information about your mask (e.g. assembling, disassembling, cleaning instructions). 


We recommend cleaning the AirFit N30i cushion after each use. 

  • Soak it in warm water with a mild liquid detergent.  
  • Hand wash it with a soft bristle brush. Pay particular attention to the vent holes.  
  • Thoroughly rinse it under running water.  
  • Leave it to air dry out of direct sunlight.  

If there is any visible deterioration of a mask component (cracking, crazing, tears, etc.) the component should be replaced. 

How-to videos




Most orders are delivered within 3-5 working days, however please allow up to 10 working days.

For full information on Delivery, please click here


From the time your order is received you can return it within 14 days.

For full information on Returns, please click here


VAT relief is available on most products in the ResMed online shop.

To understand if you are eligible for VAT relief and how to claim this within your order (as we are unable to refund any VAT paid in error), please click here for further information.



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