Sliding glass door bulletin boards are perfect for displaying large notices or when you have a tight area where large swinging doors just won't work. That is because the glass doors slide from side to side rather than swing out into the space where you're standing. Another advantage of sliding glass doors is that you get a bigger open area to display your notices or posters without aluminum frames from the swinging doors interfering with your view. Some of the locking glass cabinets are available with your choice of either a natural tan cork tack surface or select from a colored burlap fabric tack surface instead. Free color swatches are always available through customer service.