What Are These Straps Inside an F20 Cushion

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
HTTR
Posts: 16
Joined: Sun Mar 19, 2023 11:52 am

What Are These Straps Inside an F20 Cushion

Post by HTTR » Sat Apr 05, 2025 11:15 am

I've been using Resmed F20 full face cushions (silicone) for about a year and have to admit I just noticed these straps inside the seal. Any idea what purpose they serve? It looks like something could slide through but for what I don't know.
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F20 Cushion inside straps.jpg
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F20 Cushion inside straps2.jpg
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bernardc
Posts: 11
Joined: Sun Aug 06, 2017 11:01 am

Re: What Are These Straps Inside an F20 Cushion

Post by bernardc » Sat Apr 05, 2025 5:00 pm

I use that mask. Those ligaments help keep the edges from flipping inside out.

HTTR
Posts: 16
Joined: Sun Mar 19, 2023 11:52 am

Re: What Are These Straps Inside an F20 Cushion

Post by HTTR » Sun Apr 06, 2025 9:29 am

Thanks. One less mystery of life to ponder. :)