Add the F250's to this if you already didn't. Same cabs as 150's.
I have never opened mine. No doubt it would break if I did.
One thing I remember reading was the panels tend to seize up on the gaskets. If you want to (try) and avoid breakage, run some soap along where the glass meets the rubber/gaskets so it will slide. Also to raise the panel first before sliding it, again to break the seal, so to speak. I read about so many that have broken.
I have never opened mine. No doubt it would break if I did.
One thing I remember reading was the panels tend to seize up on the gaskets. If you want to (try) and avoid breakage, run some soap along where the glass meets the rubber/gaskets so it will slide. Also to raise the panel first before sliding it, again to break the seal, so to speak. I read about so many that have broken.