From thermal industrial corporated
A home owner from PA says:
April 4, 2016
The parts(sash lifts) are from thermal industrial corporated
Dave from SWISCO responded:
April 6, 2016
I've seen this window handle in the past. I'm afraid there is no exact replacement, but what I have done was purchase a length of aluminum angle at a local hardware store. Then I just made the handles up by hand. Would this solution work for you?