Replacement for awning windows

Question

Hello!
Pictures attached are of the mechanism used for porch windows. I need replacements for at least two and not sure how to measure so I get the right fit.

Any help in how to measure or where to purchase would be greatly appreciated. The company was Permaseal Corp out of New Jersey and they are no longer in business as far as I can tell.

Many thanks in advance.

Regards,
MJ

Dave Sr. · Accepted Answer

Looking closely into your photos, I do not believe you have a Permaseal window, but rather an older Silverline window. For that, see if our 39-025 awning crank operator would work for you. The best way to confirm that would be to remove your operator from the window and carefully compare the measurements between your part and ours. Pay close attention to thew mounting screw hole centers. Make sure they match up with one another.