If you keep reading that towards the end, it talks about the jumper for the blower profile.
[/quote]about 2000 sq/ft age 37 which was the age of the previous Rheem furnace (RIP) it was probably 40% vs this one which is 95%!![/QUOTE]
Are the windows updated? My guts are saying you may have an oversized A/C... but if the Manual-J says that what you need, guess it's right.