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Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open it and lowering it to close.
Storm door, Japan. A storm door is a type of door that is installed in front of an exterior access door to protect it from bad weather and allow ventilation.Storm doors generally have interchangeable glass panels and window screen panels to provide visibility and prevent flying insects from entering the home.
A screen roller or spline roller is a small hand tool used to press screen mesh into the edges of a window frame that is fluted on the inner edges, or to press in the retainer spline that holds that mesh in place. Often these are combined into a single tool or combined with a spline cutter; versions are currently manufactured from plastic or ...
A typical single-car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Oversized roller doors in commercial premises are not sprung (except in the US), and a manual pulley and chain system or a geared motor is used to raise and lower (roll up and roll down) the door ...
Platform screen doors on the Elizabeth line at Farringdon, 2019 "Horizontal lift" style doors at Lomonosovskaya station on the Saint Petersburg Metro, the first screen doors in the world The idea of platform edge doors dates from as early as 1908, when Charles S. Shute of Boston was granted a patent for "Safety fence and gate for railway ...
A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass , plastic wire, or other pieces of plastic and stretched in a frame of wood or metal.