Thanks Ted. Door is circa 2006/7, Milgard from HD. Very well could have been a stone hit from earlier times.
Being the fixed panel it doesn’t appear to be removable, if so I’d take frame in and get glass replaced. But being 25 miles from town, if I could get on site repair I think it would be very costly - not that I’ve found such a service.
Leaning toward getting a 4x8x1/8 plexiglas and doing myself.
I did get it weathered in for now
View attachment 664736
Interesting about the glass though as about the time frame you reference we had a fairly new patio set from KMart. Came home from town on day and found all the glass on the concrete. Had only been set up 4 days. Called for warranty claim but denied.