Thank you. The dimensions seem to match. I had some of these professionally replaced recently and on the invoice they indicated a 2840 for the same size window (35"W) and a 2850 put on a larger, 47"W, window. Do you still think 2830 is the right one for the 35"w window? Also, do you have exterior bead for these windows. Some of that is cracked and I can't get the pros to return for that. Is that a DIY project? Thanks again.