Problem to be solved: to provide a tabletop type ventilation booth capable of removing the rectification plate.Solution: in the interior of a box shaped main body part 1 having a front opening, rectifying plates 2a and 2b having a main surface facing the opening at the front face are provided, and a through hole for communicating with the space in the space corresponding to the space behind the rectifying plates 2a and 2b of the top part of the body part 1 is formed. The exhaust unit 3 is connected to the body portion 1 with a posture in which the suction port is brought into the through hole.The plurality of rectifying plates 2a and 2b are connected to the main body part 1 via the connecting metal fitting 4 and screws 7, 8 and 9, respectively, of the respective end edges As shown in Fig. 3, the main surface of the main body 1 is detachably supported by the main body 1 in such a manner that its main surface is inclined so as to approach the bottom of the body 1 toward the rear and at least one end thereof is separated from the inner surface of the body 1 by a predetermined amount of space.Diagram
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