Help with unknown brand hinges
It looks like the hinge set is eroded. See our 36-004-10 10" Hinge Set. Look over its dimensions and see if you think this could work for you.
I agree with Bob, I think our 36-004-10 looks like a good match for your original hinge set. The design is a little different but as long as you replace the top and bottom at the same time then it shouldn't be a big deal. Can you go into more detail as to why you don't think this will work?
Yep, the 36-004-10 comes as a pair: one hinge for the top, the other hinge for the bottom. It can work for either left or right handed windows, you just flip the pieces over.
That's excellent news! Thanks so much for the update and please let us know if we can be of any help in the future.