HI
My name is Phil,
I have 9 jealousy window crank handles and gear boxes that need to be replaced. Enclosed is a two pictures of the unit. The dimensions are 4 1/2 in tall x 2 3/16 wide. 7/8" thick. There are NO itentifying marks or names on the crank or assembly. From top to bottom including the mounting flanges it measures 5 7/8" tall and 2 1/4 " wide. I've included another picture. Hope this helps.
Thanks for your help.