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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 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.
Contact numbers for help with storm shutters in Florida. International Hurricane Protection Association: (844) 516-4472, www.inthpa.com American Shutter Systems Association: (800) 432-2204, www ...
Preventive maintenance checks and services (PMCS) in the United States Army or preventive maintenance inspections (PMI) in the United States Air Force are the checks, services, and maintenance performed before, during, and after any type of movement or before the use of all types of military equipment.
PS: The Preventive Maintenance Monthly, more commonly referred to as PS Magazine, was a series of United States Army pocket-sized bulletins published between June 1951 and November 2019 as a monthly magazine with comic book-style art to illustrate proper preventive maintenance methods, as well as proper supply procedures and related safety.
Operable louvered shutters have louvers (or louvres in British usage), or slats, controlled by a tilt bar or rod to adjust the louver position and keep them in a uniform position, to control light, visibility and airflow. Shutters with operable louvers are described variously as traditional shutters, California shutters, or plantation shutters.
Building automation (BAS), also known as building management system (BMS) or building energy management system (BEMS), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, shading, access control, security systems, and other interrelated systems.
Roller slides are based on linear roller bearings, which are frequently criss-crossed to provide heavier load capabilities and better movement control. Serving industries such as manufacturing, photonics, medical and telecommunications, roller slides are versatile and can be adjusted to meet numerous applications which typically include clean ...
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