What are the requirements for the hotel kitchen door?

1, the ceiling must use grade A materials; 2. The alarm system adopts a temperature detector; 3, (high) using automatic sprinkler system; 4. The partition wall shall be incombustible, with a fire resistance limit of not less than 2.00h h. The doors and windows on the partition wall shall be Class B fire doors and windows, and the area shall be calculated according to the number of evacuees; 5, fortification smoke, take measures to prevent backflow or set fire damper on the branch pipe.