A handy person from Parma, OH says:
April 5, 2016
anderson AW7571 or 75/1
Tom from SWISCO responded:
April 6, 2016
I'm sorry, I wasn't able to match that number up to anything. Can you specify exactly what it is you're looking for? Could you also show us a few pictures of the part in question removed from the window? Finally, please give me your dimensions.