Roof monitor for ventilation

PURPOSE: A ventilation monitor is provided to be easily connected with a bent edge of a support plate so that the support plate and a frame are connected to an outer side wall by a coupling member. CONSTITUTION: A ventilation monitor comprises a frame(10), a pitched roof(20), a plurality of support plates(30), a pair of outer side walls(40), and a cover unit. The frame is mounted to a roof of a building, and formed along a length of a ventilation space. The pitched roof is connected to an upper part of the frame, and covers the upper part of the frame. The support plate is protruded from both sides of the frame, and installed at constant intervals from the frame. The outer side walls comprise holes connected to the outside. The cover unit prevents foreign materials from flowing into the ventilation space.