I was going to use a window product called EZ-Breeze to enclose my porch for a 3+ season room. EZ-breeze has a 4 track system for the windows which allows up to 75% of screen exposure. However, these units are not energy rated or water resistant, and they seem kind of pricey taking that into consideration.

I have 8 window openings that are around 53" (W) by 71" (H). I'm looking to see if anyone: 1) knows of any alternative window/screen products or approaches to accomplish the 3 season goal plus good ventilation, 2) can provide a ballpark cost for any alternative offerred, 3) can provide a ballpark cost for just doing simple screening. Thx