Has anyone installed Pella's Integrated Rollscreen Windows in their home? These windows have an integrated screen that appears when you open the window and rolls away out of sight when the window is closed. We're looking for a window for a Three Season Room/Sunroom where we'd like to have a clear glass view when the windows are closed and are having trouble finding a product to accomplish this. Our builder planned to use Scenix windows by Larsen but they have been discontinued. Any reviews of Pella's product, or other recommendations?