Sorry, I can't, I have already installed my non sliding window & moved on....as i recall when the opening was ready there was a vertical brace on both sides of the window that would have needed to be cut out so the sliders could then move out of the opening. I don't remember if it was just those 2 pieces or not, as i said if i would have cut those out, then continued with Bob Drake installation instructions & found something else as a problem I might have faced reinstalling those 2 pieces, was not willing to got here, I am trying to install as many Period Correct options of 1947, was disappointed to not get this one done.....