39-074: 23" or 23-1/4"?
A quick learner from Wyoming, Michigan says:
April 8, 2013
I removed the operator from the window. Your part number 39-070 appears to match very close. My dimension is close but not exact on the 23 1/4. I measure 23 and presume that this should operate ok. Unless I hear differently from you, I will proceed with the order.
Tom from SWISCO responded:
April 12, 2013
Thank you for posting! Actually we measured it to be 23", as well. I'm not sure why Truth Hardware has it officially labelled as 23-1/4", but it seems to match your dimensions regardless.