Mine was replaced with plexiglass by the previous owner. It has warped and water leaked inside during a rain storm while on the road. I had to do a patch job in my cousin barn half way cross country! Looks a mess…Maybe the Lexan won't warp. Hope so, thanks for the suggestion. I have heard of this happening to many Toyota RV owners…and yes it is sharp and makes a big mess. If you still have glass up there; get the tint material on it ASAP.