Managing Exit Windows
Most emergency exit windows swing out and up. When closed they have a seal around their perimeter to keep water out. Over time, this rubbery seal adheres to the exterior wall of your RV, accentually glueing it shut.
Twice a year, in the spring and fall, fully open each of your emergency exit windows and treat the rubber seal to keep it pliable and free from the exterior walls to enable a fast exit. A spray-on silicone lubricant or talcum powder are two readily available products that will keep your exit from sticking. And, while you are at it, spray some silicone lubricant on the hinge and latch assembly to keep them operating freely.
When you try opening the window all the way — as far as it goes — you’ll discover gravity working against you, trying to close the window. This could add a precious second that you and your family may need to climb out to safety.
With the window fully open, measure the distance from the bottom of the window to the window frame, mounted in the wall of your RV. Cut a short length of wooden dowelling or PVC pipe to that length and keep it available, near the window, to prop and hold the window open. I suggest using a piece of Velcro to secure the prop near your window where it’s easy to find, even in the dark.