Silver AAMA label on window
Mfg code DAN-1
series 300/700 HP
ANSI/AAMA 101-88
DH-R25/DH-R30 (Modif)
MST 3860
Looks similar to Swisco 55-180
My dimensions (best estimate) hook side 1/2 inch
top side 3/16
drop down side 3/8
bottom of L side = 11/32
Paul from SWISCO responded:
October 3, 2017
Hello from SWISCO.com! You have a window from Danvid, who went out of business back in 1999. The snap-in glazing you selected, 55-180, looks like a good match. Let us know how it works out.