Window opening size is 20 inches vertical 30 inches horizontal. Crank does not move window and is loose when turned. Numbers are DF 1100A; CCMC 9186; Brevet Can #1,160,103; Brevet USA #4,400,923; ????????A3,B3, C3.
Side arms are ok.
The window moves freely when pushed in or out by hand with the crank loose. Side arms associated with locking latches and latches themselves are ok
Thanks in advance
Ron