Related Terms: Throat, Booklet, Gate fold, Bifold door, Hinge, Concertina fold, Unfold, Hinge, Gatefold, Open end envelope, Hollow, Drop front, Pocket, Accordion fold, Active door, Pop-up, Garage door opener, Paste-down, Bangtail, Panel, Dutch door, Letter fold, Hinges, Hinges, Spring hinge, Wicket, Garage door, Envelope, Fall front, Lap, Pocket door, Sliding door, French doors, Open, Door , Sliding glass door, Hand, Patio door, Escritoire, Accordian fold, Pastedown, Kick plate, Open side, Open end, Continuous hinge, Astragal, Inactive door, Fan fold, Living hinge