Folding crank for window treatment
Hello, thank you for posting,
It appears that your window uses Andersen hardware. The best we can provide is the 39-301 folding handle or 39-298 T crank that both fit onto a 3/8" diameter operator spline size. Please note that these styles will not provide full clearance for blind applications. Let us know if you have any additional questions.
thank you
Hello,
The picture below is the 39-301 handle flat. It has a 1-3/16" projection as outlined with the red line.

I would say that the 39-298 T handle provides the most clearance. Just keep in mind that no matter how low a handle can fold, it can't go any lower than the operator stem. That's a fixed part of the mechanism and nothing on the market can allow an operator to sit lower than that.