We have had a request to post some photos of the exterior, aftermarket “clips” that were on our original 1973 Avion, 28 foot LaGrande.
Here is one of them below.
A previous owner had put these on because, lets face it, those window crank mechanisms are far from reliable, or sturdy.
Last thing you want is your window to accidentally open enough to catch a gust of wind as you tool down the road and bend the window frame out of alignment or worse, rip it off!

We suspect you can probably find similar clips to the original ones on our Avion in a good hardware store that has screen door replacement parts too.
RETRO-FITTING REPLACEMENTS:
Along the way, we had to add and also replace some and what we used was actually those small shelf support holders that you see in some bookcases, kitchen cabinets, etc.
SEE BELOW for what we found worked. The rounded pin end was what was against the window frame and held it snugly in place. We reused the original holes from prior “safety clips” that were either lost or lost their ability to hold the window and used these clips below with a small screw in place.
Using these make shift safety clips does help in preventing the inadvertent opening of your window when going down the road at 60-70 MPH (we never go over 60-63 MPH when towing!). Those window cranks are not failsafe and can over time fail to hold your window securely closed. We have read where especially when traveling in high wind areas where windows have opened enough to be sheared off.
Just remember, if you do go the way of installing these or similar types of clips, you will need to bring a portable power drill with Philips head on it to loosen them up once you get to your campsite so you can rotate them out of the way and open your windows. We do not recommend taking them completely out every time (you will lose them and you may prematurely strip the holes)
Hope this short article helps! If it has…let us know with a comment!
Let us know if you have come up with another idea on securing your windows from accidental opening when towing!
Safe and Happy Journeys!