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Anonymous users2024-01-23How to negotiate compensation for the exhaust fan that should be placed on the top floor of the resident? You can consult a lawyer to help negotiate.
No, the exhaust fan installed on the roof of the building belongs to the electrical equipment, does not belong to the illegal construction, illegal construction refers to the top floor of the house privately built with color steel plates or other bricks to build a simple house is considered an illegal construction.
Fire safety can't pass, definitely not.
Fan silencers can be installed, which are mainly used to reduce the aerodynamic noise of various fan tuyeres, air ducts and closed machine room air intakes.
If the air volume and pressure can be guaranteed, in order to control the fan noise, the exhaust air of the catering kitchen can generally choose the fan speed of 1450-720r min
This specification is not common, most of them are 30*30, or 60*60.