Abstract: A large poster mounting frame is provided for displaying a poster along the wall of a building structure. The poster mounting frame comprises a pair of vertical side guide rails and a support rail extending between and connecting the two side guide rails. The frame can be mounted directly on the side of the building structure. The rails have a U-shaped cross-section with the open portion facing inwardly to form a continuous channel. A pair of grooved wheels are rotatably mounted on the support rail and hoist lines are directed over the grooved wheels and are connected to an upper poster carrying rail attached to the upper edge of a large poster. The lower edge of the poster includes a lower carrying rail. The hoist lines are used to raise the poster along with the upper and lower carrying rail into sliding contact with the side guide rails of the frame until the poster is securely mounted and displayed within the frame.