As you can see from the picture the operator cover has cracked and we were hoping to replace it. The second picture shows it without the crank handle.
There is a serial number on the metal swing out.
(measurements: 4.5" long _at the front; 4 5/8" long at the back; 1 1/8 " deep; 3/4" height at front)
The window dates from circa 1974 and is still in good condition (wooden frame).
Hope you can help.
Tom from SWISCO responded:
June 10, 2016
Sure, check out our 39-154. This is the closest match we have to your cover. It has two screw holes in it, as most modern Andersen operators use screw in these positions, but it should still work.