Sprinkler mounting device

A device for mounting a sprinkler to a ceiling support rail in a building, comprising two vertical sidewalls integrated together into a U-shaped single structure by a top wall, wherein

• the two sidewalls are bent inwardly at their lower ends to form clip flanges used for gripping a head of the ceiling support rail positioned between the two sidewalls, with a first bolt hole being formed at a lower portion of each of the two sidewalls and a first locking bolt being threaded into the bolt holes of the two sidewalls so as to tighten the lower portions of the two sidewalls and allow the two sidewalls to firmly grip the ceiling support rail, and a notch being formed at an upper portion of each of the two sidewalls and being used for seating a reducer support beam of the sprinkler therein;
• and
• said top wall has a second bolt hole, with a second locking bolt being threaded into the second bolt hole so as to hold the reducer support beam seated in the notches of the two sidewalls.