Continuous media edge reference surface for a removable media input tray assembly of an image forming device

A removable media input tray assembly comprising a housing for receiving a removable media input tray. One or more housing assemblies stackable beneath an image forming device. The assembly having a substantially continuous media reference surface extending the height of a media feed path formed by two vertically aligned plates, one plate mounted on the removable media input tray and the other mounted on the housing and extending into the removable media input tray when installed in the housing, the arrangement of plates minimizing any gaps in the media reference surface within the assembly and adjacent assemblies and the image forming device.