The right shelving system supports how you access, handle, protect, and display the materials required to serve your purpose. Spacesaver’s steel shelving systems are designed to make better use of the space you have today and adapt to your evolving storage needs. Below is a breakdown of shelving types – 4-Post FreeSpan™, Cantilever, Widespan, and High-Bay – including what each is, the scenarios they excel in, the accessories they offer, and the markets where they typically fit best.

4-Post FreeSpan™ Shelving
Built on the dependability of our Traditional 4-Post Shelving, our 4-Post FreeSpan™ Shelving is a modern, clip-type system that offers on faster adjustability and increased flexibility for its users. Its patent-pending clip design with double-rivet attachment enables shelf height adjustment in ¾-inch increments and three times faster than Traditional 4-Post Shelving.
FreeSpan is designed to function as a stationary shelving system or be mounted on a movable system – High-Density Mobile Shelving or Flexible Shelving – to dramatically increase storage capacity. Its robust structural components support stable, secure storage for spaces where change is constant, including equipment rooms, active storage areas, and collection/supply environments where item sizes shift seasonally or program-to-program and quick reconfiguration matters.


Compatible with existing Spacesaver 4-Post Shelving configurations and accessories, 4-Post FreeSpan Shelving incorporates three new shelving types – Plain, Universal Slotted, and Perforated – as well as dedicated add-ons including FreeSpan™ Shelf Stiffener for increased capacity/strength and FreeSpan™ Shelf Extender to help keep items from falling through to the next shelf level.
FreeSpan is well suited to markets that prioritize operational flexibility – athletics facilities and equipment storage, education settings, museums and archives planning for growth, and other organizations that need dependable storage that can be quickly tuned to changing inventory and workflows.
Download the 4-Post FreeSpan Brochure
Download the 4-Post FreeSpan Brochure

Cantilever Shelving
Spacesaver Cantilever Shelving is a versatile, heavy-duty steel shelving system built around welded frame uprights and cantilevered shelves that create an open, accessible design for spaces of all sizes and layouts. A dependable solution for everything from general strorage to books and other library materials, Cantilever Shelving can be reconfigured, relocated, expanded, or even mounted on High-Density Mobile systems or Flexible Shelving units as needs change.
Most commonly found in open-stack library collections, educational environments, back-of-house materials storage, and applications where easy access is required, Spacesaver Cantilever Shelving offers users the flexibility to adjust shelf widths, depths, and upright heights to fit different items over time.


To support users in a wide array of markets including libraries, healthcare, and manufacturing, Spacesaver offers a full lineup of accessories. These include file dividers, modular bin storage, and other display-oriented materials that are compatible with modular elements like our EZ Rail® element – each customized to help increases capacity, reconfigurability, and user-friendly access.

Cantilever Shelving Brochure
Cantilever Shelving Brochure


Widespan Shelving
Spacesaver's rugged and versatile RaptorRAC® Widespan shelving is the perfect solution when Traditional 4-Post Shelving solutions aren't enough to meet your unique space and heavy-duty storage requirements. Designed for durability and efficient storage of heavy and bulky items, RaptorRAC provides the ideal solution for static applications and can be seamlessly integrated with Spacesaver’s wide range of industry-leading mobile systems.
The ideal choice for back room and warehouse storage needs, the RaptorRAC storage system delivers long-lasting and dependable support for applications within healthcare, museums and archives, government, public safety, business, and manufacturing sectors.


High-Bay Shelving
High-bay shelving can be essential to reclaiming and optimizing your organization’s available space. By efficiently utilizing vertical space, these systems leave your floor area uncluttered and dramatically increase storage capacity. Spacesaver’s High-Bay Shelving provides a range of shelving options, which can be adjusted based on book size or box type to condense collections and utilize as much space as possible.
From storing evidence to archival storage within education facilities, High-Bay Shelving allows organizations that are facing growing pressure to find new ways to get more use and profit out of less space.
Full-Service Support
From offering increased storage capacity to improving functionality and accessibility for users in all markets, Spacesaver’s nationwide network of storage consultants have the knowledge and tools to deliver the ideal shelving solution to maximize functionality. Contact us to schedule a no-cost assessment of your facility, where your Spacesaver local representative can show you how to utilize our versatile storage systems to make the most of your space.
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