How high is the side shower nozzle of hotel decoration from the ceiling?

The distance between the side nozzle of the hotel decoration spray and the ceiling should be between150 mm-300 mm.

If the shower nozzle of the hotel decoration adopts the side wall type extended cover shower nozzle, it shall comply with the provisions in 7. 1. 14 of Code for Design of Automatic Sprinkler Fire Extinguishing System (GB 50084-200 1 2005 edition, hereinafter referred to as "water gun"):

The distance between the splash plate of the nozzle on the horizontal side wall and the roof should not be less than 150mm, nor should it be greater than 300mm, so the nozzle should be arranged at the junction of high and low ceilings, and the height from the ceiling should not be greater than 300mm, but the 300 mm space between the interface of high and low ceilings and the bathroom partition becomes the blind spot of the sprinkler system, so two ceiling nozzles are added in this area to meet the requirements of full coverage of the sprinkler system. This arrangement is often used in hotel room design.