Door closers must be used to hotels, offices, and public buildings for fire protection.

The construction of fire resistant doors is subject to the clearly defines regulations of DIN18082. The regulations of smoke control doors are listed in DIN18095.
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The Hafele’s doors closers are certificated by institute of Warrington. Furthermore, this product category has certifications of building funtionality and cover a wide range of force.
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The last years, concealed door closers are used for projects due to the fact that they have a more aesthetic effect and protect the door closers better.