Display posters that are 22-inches wide on a window or mirror using this plastic rail system. A great alternative to using traditional wall-mounted frames this rail system uses a snap-open design for easy graphic changes. The plastic construction is economical and can support heavier banners. The top rail has a channel with 2 adjustable eyelets that allow the banner to be attached to suction cups for glass mounting. The bottom rail ensures that the banner stays flat and taut.