Replacement for crank out windowOn the back it appears to be made by TRUTH there is a part number above the truth logo 40055 there's a number six in the corner and I each in the other corner these are on the back of the unit that I took a picture
Tom from SWISCO responded:
April 22, 2020
This operator looks like an older version of our 39-013. The style of the base is rounder on ours, but it will still work the same. Look it over and see what you think.