I want to enclose the lanai with sliders which can be open in good weather, and closed when the monsoons are here.

I looked online and discovered 9.0' wide sliders can be purchased through the major DIY stores. Our lanai is 9' wide, so one slider would fit that existing frame. These could be used to complete the two sides. The lanai wall facing our neighbor's house side wall, are longer, so bit more of an issue with that. Anyone else done this themselves? The only issue I recognize, is, are the existing aluminum frames sturdy enough to support the sliding door?