Don't buy this mask unless you own a Resporonics CPAP. The reason is because it has a device to release air. For other CPAP machines, there is no compensation and your mask won't pressurize properly. I had to cover it with tape!
Also, I couldn't hardly ever get it to seal properly even though I chose the size to my face using their template.
The gel is also not very comfortable.
So beware!
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