Install radon Manometer in accessible location (through gyp) while maintaining airtightness?

I need to install a radon mitigation system, which includes a manometer.  While the manometer does NOT give a radon reading (I have another device for that), it does provide… I need to install a radon mitigation system, which includes a manometer.  While the manometer does NOT give a radon reading (I have another device for that), it does provide…Read MoreGreenBuildingAdvisor