There are 2 latches per window. These are sliding windows. On the glass is stamped: IGMAC IGCC CBA Lo E2 CARDINAL CIG-5 3-00
On the latch there is a number stamped 30615.
Bob from SWISCO responded:
February 2, 2021
The 30615 code has been associated with our 90-294 Face Mount Lock in the past. Look over all the dimensions and let me know if you think this could work for you.