Glass Door
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Btw, are these airtight? PostRobcore (talk) 03:45, 24 December 2017 (CST)
Yes they are! - Unsigned anonymous editor.
They have a pretty low pressure rating, around that of composite walls I believe. So in case of heating, gas leaks, fire or explosion, it can break rather easily. Sunspots (talk) 16:05, 24 December 2017 (CST)