Help Needed: Identify Window Controller Handle

Thanks for posting. The crank handle is likely something like our 39-114L. However, if the window is failing to open its likely the operator it connects to--that base with the gears and the arms that push the window sash outward--are what need to be replaced. We can help but we need to see the entire assembly, including the link arms, to identify it for you.

It's possible this operator and handle is of an older design and no longer made. The 39-171 looks similar in configuration, but I highly advise you compare all the dimensions to confirm this. For a new crank handle that works with this handle set, see the 39-114L. You also may need to replace the bracket on the sill that the link arm connects to--see something like our 39-545 or 39-546, or perhaps the 39-524.