To provide a mount which has such a novel form as capable of housing a flat object such as a small bag of a trial sample and on which commodity explanation, advertisement or the like are printed.

The mount which is made by sticking a front plate and a rear plate together and in which a flat object is housed, is characterized in that a window is disposed in the front plate, a plastic film is stuck partially or wholly on a surface of the front plate while covering the window to form a housing space in which the flat object can be inserted from a rear side of the window. Further the rear plate is stuck to a rear surface of the front plate while covering a part of the window so that one side of the rear plate divides the window in a rear surface of the front plate and uncovering part is made to be an entrance and an exit where the flat object can be inserted in/taken out, and also opening/closing plate parts can be successively disposed so as to be openable and closable via a folded line at one side of the rear plate.