High-density Filing Systems are for actively referenced large documents like Construction Documents or Blueprints, and Maps. High-Density means that they will hold a lot of drawings in a single solution, many times by clamping or compression methods. These Large Document Storage Solutions provide quick and easy retrieval of drawings or maps in a minimum of floor space. Many organizations store as-built drawings or aerial survey maps in solutions like these. Many City and County Governments have stored their valuable information in solutions like these for decades. If you're looking for a near permanent storage solution for drawings, maps, x-rays, or art, and have a lot of them, then high-density storage may be your solution. These metal cabinets are commercial grade products for a commercial grade use.