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Roll shutters on windows. 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 ...
The curtain is then rolled onto an axle which is covered by a housing. Rolling shutters can be operated manually by gear, by pull strap or can be motorized independently or in conjunction with a manual override. Motorized shutters can be operated by either a switch or remote and can be controlled either individually or in groups.
In addition, during a fire or a similar emergency situation in which it is necessary to escape, lockable windows, window shutters or grilles (especially fixed ones) may become dangerous obstacles, so it is necessary to ensure that the keys are as close to the windows as is practical or, if a window is an important emergency exit, that it can be ...
In North America, the Door and Access Systems Manufacturing Association (DASMA) defines high-performance doors as non-residential, powered doors, characterized by rolling, folding, sliding or swinging action, that are either high-cycle (minimum 100 cycles/day) or high-speed (minimum 20 inches(508 mm)/second), and two out of three of the ...
Some exterior shutters in Italy, such as in towns along the Adriatic coast, slide on rollers into pockets in the wall at each side of the window. In Germany and other parts of Europe, rolling exterior shutters on tracks have become ubiquitous. When open, these type shutters roll up into boxes concealed in the thickness of the wall above the window.
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