Witt Construction As you can see to the far right of the attached photo below - the framing for a glass french door. But depending on the interior/exterior wall space you could install sliding glass french doors, paneled doors, or a single door.
Foundation - I love this screen room! What kind of foundation is this set on? Is it full masonry footings as for an addition? Or since it is a screen room were you able to build on a different foundation? »
http://www.minka.com/ProductList.aspx?brand=232&family=1532|Concept%E2%84%A2%20I&pagenum=1&a=232
This is where you can find a dealer near you:
http://www.minka.com/dealerlocator.aspx
:) Rhoda