This is my poor mans windshield. I make one every year late Oct and rip it off every spring. I buy a “window insulation kit” made from shrink film. A package for a 42 X 62 inch window cost me $2. I put a piece of PVC as a bottom brace. It is just wedge fit. Then you put double sided tape that comes with the shrink film on the roll bar and bottom brace. Put the shrink film on – trim – then cover with duck tape. Hit it with a hair dryer and the film pulls it all tight. This one has been on from last Oct and is still clear and tight. I will throw it away next month.