I have a patio that measures 11' by 19'. It is covered with an aluminum roof. There are screens on 2 sides of the patio and the other 2 sides of the patio are the house.

I am interested in removing one of the screen walls in order to open up the patio to the backyard. The screen frame consists of 2" x 2" aluminum beams. For the vertical beams there are 2 corner beams and 3 additional vertical beams spaced evenly at approximately 4' intervals. There is also a horizontal beam running across the top which attaches to and holds up the aluminum roof.

What I want to do is remove the three vertical beams and leave just the corner beams in tact. My question is will this work? Or will the aluminum beam that holds up the roof start sagging? If I need to reinforce it, what approach do you suggest?

I have a picture of the patio, as well as a closeup of the aluminum beams.

Thanks for any help!