part number for concealed top latch


Yes, the top latch for the 25-V carried over from the 18-V device. Surface vertical rod top latch = part #650389 or #650375(fire rated)
The old style Von Duprin 3327 top latch and rod is longer available.  The part number for old 3327 top latch was 105339.
The top latch for a Fire rated surface vertical rod device is part #650375-00 which replaced the old part #F588.
The part number for 98/9927/F top latch less cover is 050400.
The part number for 5547 top latch and rod assembly is 050053-00.  
050090 for bottom latch retrofit kit and 050091 for top latch retrofit kit.
The AL series latches are not adjustable.