[DiogenesLamp]

I judged by what I know of Andersen windows, two panes and vacuum in-between. I thought more temperature/pressure requirements for an aircraft.

I very much doubt there is vacuum in-between two window panes unless they are very small. At 15 pounds per square inch, a window would shatter unless it's very thick, or very small.

I would think they would use nitrogen or something.

[melancholy]

“I very much doubt there is vacuum in-between two window panes unless they are very small. At 15 pounds per square inch, a window would shatter unless it’s very thick, or very small.“

It depends on the vacuum level and the pressure units. 15 psia is roughly atmospheric pressure. I’ll assume you’re talking psig, where atm. Pressure is 0 psig.

In home windows, such as Andersen, you can have vacuum, not necessarily full vacuum to control the thickness (weight, etc..)

Now, there are plexiglass and acrylics that can take much more than 15 psig. We’re talking hundreds and thousands psi.

Of course depending on the thickness, you can match to applications and how severe the service is (temp.& press.)