Looks like 2J8
on the left side of tab on top on the right side ends with what looks like 2 then a space then two numbers could be 83 could be BS
bottom side of tab much clearer 519 on the left on the right BJ49 possibly 8J49 then a space and 6\92
on top lower right corner 11600A
The window is a bathroom 24x37inch
