Paragon slide cabinets are the most effective
  system for easy slide storage and retrieval. Cabinets are available for storage of micro-slides, 35mm slides and electron microscopy films. You can easily stack Paragon slide cabinets as many as 12 high. They interlock securely, so you can expand your storage capacity as your files grow. Stack them directly on table, desk or counter — or on the floor with our sturdy base.

Drawers are easily removed and interchanged
  on Paragon's newly designed all-steel (no plastic parts) track system.

Tolerances are the tightest you will find on any slide
  cabinet for smooth operation and long life.