2 5/8 in length maybe 11/16 wide. The "T" Tips have broken off both left and right latches. The width of the window is about 1 1/2 inch where the "T" tips sit. Markings show Series: 8500/8550 DH.
Paul from SWISCO responded:
March 25, 2016
It's hard to tell what you have based on these pictures. It appears your latch is damaged, and much of it is obscured. That said, start with our 26-266 and 26-267. These may be the parts you need.