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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.
A roller shutter or sectional overhead door is one variant of this type. A tambour door or roller door is an up-and-over door made of narrow horizontal slats that rolls up and down by sliding along vertical tracks; it is typically found in entertainment centres and cabinets.
At about this time, metal grilles started to be used at night to allow passersby to view the goods on display. Metal roller shutters were introduced in the late 1970s and early 1980s as a response to street riots throughout the United Kingdom, but now there are alternative solutions for the security of shops. [2]
Clermont Steel Fabricators (abbreviated as CSF) is a private steel products manufacturing company known for making Bolliger & Mabillard roller coasters. The plant is located in Batavia, Ohio. CSF was founded in 2004 after the closing of Southern Ohio Fabricators. [2] As of 2013, Clermont has 65 employees.
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.
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Window shutter, a solid window covering used for light control, privacy, security, protection against weather, and to enhance the aesthetics of a building; Roller shutter, a type of door or window shutter mainly used in retail shops, warehouses, and other facilities
The term window shutter includes both interior shutters, used on the inside of a house or building, and exterior shutters, used on the outside of a structure. On some styles of buildings it is common to have shutters to cover the doors as well as the windows.
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