Designed by Inside Weather, we have modifed it for easier strap usage and more cost efficient and easily removable double sided tape.
The mask can be disinfected, and new consumable foam pads and elastic straps can be installed for a very secure fit.
Initially designed by Dr. Hsien Yung Lai, we have modifed it for extra sturdiness by removing acrylic glue seams and replacing them with heat bends, as well as tapering the assembly slightly so units may stack and nest for better transport and storage.
This unit can be sterlized with 70% alcohol or bleach. We recommend using a good microfiber cloth to avoid microscratches that will fog the plastic over time. Do not clean with acetone.
You will need a strip heater like this or this. You can also just buy the element and build a metal enclosure around it.