White ,on the inside of the handle it says Andersen Corp bayport minn.screw holes look like 5 1/2 on center
Tom from SWISCO responded:
November 7, 2019
Hello! I recommend looking at our Andersen brand 88-013 inside handle and 88-014 outside handle. These can be installed using our 33-109B bolt. Look them over and let me know what you think.