Andersen® 200 Series Narroline® gliding patio doors have panels that move on ball-bearing rollers. The result is long-lasting, smooth, effortless operation. With at least one panel that glides smoothly past another door panel, youll get more room where you needinside or out. These doors combine the beauty of natural wood with sleek contemporary profiles to maximize your view and fill your home with sunlight. Available with our most popular options, in heights up to eight feet and four-panel configurations that give your home walls of light over 15 feet wide.