When I first bought my 1988
Bigfoot B19, I epoxied the plastic window frame on the door, but the plastic has not held up and seems to have cracked again, which led to the glass pane sliding down (hence the blue tape in the photo, just to close the gap from the glass sliding down. I don't know if I can find just a replacement frame for this window (the glass is in perfect condition so would love to just reuse it) or if I have to replace the entire window frame and glass (and if so, where would I go to do that)?
The approximate inside measurements of the frame are 11 3/4" wide by 20 3/4" tall.
Any suggestions greatly appreciated!