WebThe range of overhead door closers have been specially selected for performance, versatility and appearance. These adjustable power door closers are suitable for most applications, including offices, hotels, schools and hospitals. The correct closer is selected according to the usage, width, weight and application of the door. WebThe volume, type, and frequency of traffic through a door needs to be given due consideration when selecting the right model of door closer. Traffic type is split into three levels as per the chart below: Usage Category. Cycles Per Year. Low. Up to 10,000 cycles per year. Medium. 10,000 - 100,000 cycles per year. High.
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WebJul 1, 2015 · Any ‘delayed action’ function should be capable of adjustment to less than 25 seconds between the door closing angles of 120° and the end of the delay zone The door closer should have been incorporated in a door assembly that satisfied the appropriate criteria of a fire test. WebPerko is the original concealed door closer, offering an economic means of providing automatic closing. Perko is suitable for internal doors up to 50kg/110lbs in weight in light … WebPerko is the original concealed door closer, offering an economic means of providing automatic closing. Suitable for internal doors up to 50kg/110lbs in weight in light to medium use applications. Solid brass round anchor plates, lacquered mechanism housing and precision-engineered chain add to its appeal. marketing for home health agency