Protects books and documents from open, sharp, upright edges;

Aesthetically more appealing.

Completely hides electrical wires within both the top spreader tube and the side-to-side frames (On the picture, the wire is in red);

Conceals electrical wiring safely when using canopy lights;

Provides a clean look since wires are concealed between two connected frames.

Unlimited number of starters and adders;

Increased flexibility and ease in reconfiguring the system.

Stacks can be modified from double-faced to single-faced or vice-versa by removing or adding shelves on one side of the stack;

Shelves are easily adjustable without using any tools and can easily be joined to existing units without adding extra parts;

Allows total flexibility for future expansion or reorganization.

Reduce risk of injury;

Protect documents or objects;

Increase the strength of the shelf.

Ensures stability even with uneven floors;

Clean appearance. No need to use unappealing and unstable shims.

Provides toe space and clean appearance.

Opportunity to eventually add stationary shelving units on mobile carriages if running out of storage space.