Patio Rooms Room Addition Sunrooms Click Here FOR FREE HOME ESTIMATE OR SUNROOM CATALOG This elegant style is a Four Seasons classic, and the most popular sunroom model we offer SYSTEM 4 CLT Curved front model. The curved front, and characteristic slim profiles, combine particularly well with many styles of architecture. Our unique features and selection of advanced MC2 Wonderglass™ make our System 4 a world class leader. A fully insulated, weather-tight home addition. The all-aluminum structure is 100% thermally broken for maximum protection in cold weather. There are many available options including: hip corners, various height models, sliding or awning type windows, sliding or swing doors, vents of all kinds and a variety of shade options. NOTE: The accessories shown on the next page are available for most products shown in this catalog. Your authorized Four Seasons representative can help you choose`the appropriate accessories for your addition. Available in bronze. white or sandtone finish.