The top is stamped C-9400-1B on the backF-9400-8A with a "B" below that.As you look at it the crank is on the left. The 2 screws closest to the window are 4 1/2" center to center. The one I see that references that number the screws are 3 11/16 apart center to center. I need 2 left and 2 right. any help would be appreciated.
Thank you,
Bruce