To provide a desktop type ventilation booth having light weight and capable of changing a position of an exhaust unit.SOLUTION: In the inside of a body portion 1 made by installing resinous panel members 20 and 25 to each of frames 10 forming a cubic or rectangular parallelepiped skeleton, flow straightening plates 2A and 2B are assembled. A supporting frame that is long in one direction is laid between a pair of frames in a fore-and-aft direction of a frame of each of both side portions and a top portion of the frames 10, and the supporting frame and a frame behind that are arranged apart from each other by a distance necessary to place a surface provided with a suction port of an exhaust unit 3. A through-hole is formed between the supporting frame of the panel member 20A to be installed to either one of the frames provided with the supporting frame and the frame on a back portion side, and the exhaust unit 3 making the suction port face the through-hole is coupled to the supporting frame of the frame installed with the panel member 20 and the frame behind that.SELECTED DRAWING: Figure 1
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