The present invention relates to a film cutter assembly in which a blade housing slides bilaterally along a pair of rails. The blade housing houses a blade. An elongated rail base is coupled or integral with a pair of rails. The rails are formed of a material which provides a cling property to hold the film to the rail and maintain the film in flat position before, during and after cutting. A double-side adhesive tape can be applied to a surface of the elongated rail base which is adapted for attaching the elongated rail base to a carton of film.