DOOR BLOCKING DEVICE

PURPOSE:To eliminate a clearance at the lower end side vertical frame when a door is closed, by providing a magnet and a magnetic body to a vertical frame tight member adhesion member and a door end side vertical frame tight member respectively. CONSTITUTION:A door end side vertical frame tight member 2A is held in a tight member holder 2a extending from a door end side vertical frame 2 to a hanging side vertical frame 3, allowable to adhere to the depth surface of a door 10. A vertical frame tight member adhesion member 25b makes an adhered end face 25d extending to the door end side vertical frame tight member 2A side in the closed condition of the door 10, adhered to the door end side vertical frame tight member 2A. By providing a magnet 29 at a part near the adhered end face 25d of the vertical frame tight adhesion member 25d, and a built-in magnetic body 30 to the door end side tight member 2A, the adhesive property of the vertical frame tight member adhesion member 25b and the door end side vertical frame tight member 2A is increased. Consequently, when the door 10 is closed, the airtightness and the watertightness of the door frame 1 and the door 10 is secured along the whole priphery, by the door end side vertical frame tight member 2A, an upper frame tight member, the hanging side vertical frame tight member 3A, and its clearance blocking tight member 25.