Measuring for a mask at home: AirFit N30i

British Man fits nasal CPAP mask on his face

August 20th 2020

For many of us, the Covid-19 pandemic has changed the way we interact with doctors and healthcare professionals. If you’re a CPAP therapy user, you might be using more online methods and virtual resources to consider – in partnership with your physician   – which mask works for you.

If you’ve received a prescription for CPAP therapy, then read on to see how you can take measurements from home for the AirFit™ N30i and use these to select your mask.

First off, choosing a mask that suits your needs and sleeping style is important because a comfortable therapy experience could help you stay on track and lead to more quality sleep. The ResMed AirFit N30i is a tube-up CPAP mask with an adjustable frame. The top-of-the-head tube is designed to give you freedom of movement, while an under-the-nose cushion helps eliminate marks on the nasal bridge.

Watch the following two videos, then take a look below to find out how to use our sizing template and discover handy tips for achieving a good fit with the N30i.

Measuring with the AirFit N30i printed sizing template

A fitting template for the AirFit N30i CPAP mask is available as a download here. Once downloaded, it can be printed out in either colour or black and white.

Using the template

  1. Ensure the template is printed to scale – you can check this using the ruler image on the right of your printout
  2. Using a pair of scissors, cut along dotted line
  3. Now, line up one of the size reference boxes (labelled SW/W, S/M) below your nose. The paper should be touching the skin of your upper lip and the image facing upwards
  4. The sides of your nostrils should not exceed the sizing box. If they do, you’ll need the next size up. Similarly, the tip of your nose should not exceed the shaded box. If it does, choose the bigger size.

AirFit N30i Starter Packs

To help get you up and running on CPAP therapy, we’ve put together an AirFit N30i starter pack. You can choose from a pack with a Small frame or one with a Standard size frame. In general women, can opt for a frame size Small while men could find a better fit with a Standard frame.

AirFitN30i starter pack graph resmed blog


Each pack also contains two cushions – one Small and one Medium.  After using the size guide, you might find you require a SW or W cushion. In this case, you will need to order your cushion as a spare part.

Once you’ve received your order, you can use the images on the left to help you achieve a good fit. If you find that you have to tighten your headgear until it is uncomfortably tight to get a good seal, you may need to order a larger size. For further help, you can read the user guide for the AirFit N30i.



Next steps

You’re all set! Now that you’ve chosen a mask cushion and frame size, you can use this information to order the AirFit N30i in the ResMed online shop, or work with your doctor or sleep specialist to finalise your therapy equipment choice. If you need assistance, or have further questions, just give your healthcare professional or our dedicated customer service team a call.

This blog post contains general information about medical conditions and treatments. It is not intended to be a substitute for professional medical advice, diagnosis or treatment. The information is not advice, and should not be treated as such. You must not rely on the information on this website as an alternative to medical advice from your doctor or other professional healthcare provider.

If you have any specific questions about any medical matter, you should consult your doctor or other professional healthcare provider. If you think you may be suffering from any medical condition, you should seek immediate medical attention. You should never delay seeking medical advice, disregard medical advice, or discontinue medical treatment because of information on this website. The views expressed on this blog and website have no relation to those of any academic, hospital, practice, or other institution with which the authors are affiliated and do not directly reflect the views of ResMed or any of its subsidiaries or affiliates.