Gliding patio doors have at least one door panel that glides smoothly past another door panel to save room where you need itinside or out. With their wide wood profiles, Andersen® 400 Series Frenchwood® gliding patio doors give your home the old-world character of traditional French doors along with the convenience and space savings no hinged door can provide. And, because theyre Andersen patio doors, theyre just as effective in sealing drafts and moisture out of your home.