FlyerTalk Forums - View Single Post - What's the little hole in the bottom of the window for?
Old Sep 4, 2004 | 8:58 pm
  #4  
cordelli
In Memoriam
 
Join Date: Feb 2000
Location: Easton, CT, USA
Programs: ua prem exec, Former hilton diamond
Posts: 31,801
It lets the condensation out and equalizes the pressure between the panes of whatever that is. Without it the windows would be constantly fogged.
cordelli is offline