Straight Eave From the practical patio room to the ultimate glass roof sunroom, the Straight Eave room is one of the most versatile systems on the market today. Its classi­cal design offers the flexibility to fit into the architecture of most homes. You may choose from a glass or solid roof, and almost any combination of glass and solid on the walls. The Straight Eave system is one of the most customizable rooms C-Thru offers. So you can choose the best room to fit your lifestyle and budget.