How to determine the right size for a Resmed F40 Mask:

Below is a PDF link which provides a sizing chart for the ResMed F30i mask.

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1. Access the 'F40 fitting template' PDF

2. Open the file. Print the file at home. It doesn’t need to be in color – black and white is fine.

3. After printing the template, get a pair of scissors and cut out along the dotted line. 

4. Refer to diagram on template to determine appropriate cushion size

5. Refer to diagram on right to determine appropriate frame size.

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