"hfother307" wrote in message
The finished opening right now with the threshold is 69 1/2 Wide and 77
1/2
High. I would like toinstall a sliding patio door here between my three
season porch and the main house to prevent heat loss. I believe that I
need a rough opening of 72 x 80. Any recommendations?

Chuck

Chuck,
Not to sound offensive, because you really made my day! I had to clean the
coffee off the monitor!

Now if the opening is too small for what you _want_ to put in, obviously
you have to make the opening bigger.