When you think of a patio door, what comes to mind? If it’s a two-panel sliding glass door, we have news for you: A patio door can be so much more! Today, there are options that tuck away into walls for completely unobstructed openings, meet at corners to open two walls at once, and even scale down to window size. With such an expansive and flexible array of patio doors, we’re sure there’s one that’s just right for your lifestyle, and your home’s size and style. Understanding what to call each part of a patio door will help you identify the features you like and communicate clearly with your pro throughout the selection and installation process.