Spacesaver’s 4-Post FreeSpan™ Shelving is a durable, clip-style steel system designed to adapt to a wide range of storage needs. Built for real-world flexibility, it features patent-pending clip technology, adjustable shelves, and a broad range of accessories. Use it as a stationary solution or integrate it into a high-density mobile system to significantly increase storage capacity.
FreeSpan™ Shelving offers multiple upright styles to match your storage goals—from maximizing airflow to securing sensitive materials. Built-in reference notches every 6" make installation and adjustments quick and accurate.
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Open Upright Closed Upright Case Upright
FreeSpan™ shelves are backward compatible with existing Spacesaver 4-post systems, making upgrades seamless.
Available configurations:

All shelves feature a straight pull-out design for easy removal and repositioning.
Engineered to uphold Spacesaver’s standard for long-lasting, high-performance systems, FreeSpan™ Shelving is built with robust structural components to provide secure, stable storage and display a broader range of materials. Optional components include our FreeSpan™ Shelf Stiffener for increased weight capacity, and FreeSpan™ Shelf Extender – designed to keep items from falling through to the next level of the system.
![]() FreeSpan™ Shelf Designed for easy removal, just lift up and pull out. | ![]() FreeSpan™ Shelf Stiffener Optional accessory for increased capacity and strength. | ![]() FreeSpan™ Shelf Extender Optional accessory for increased safety and security for stored items. |
| Upright Height (available in 1.5" increments): | Shelving Width*: | Shelving Depth: |
|---|---|---|
| Open: 23.75” – 121.25” | Standard: 15”, 24”, 30”, 36”, 42”, 48”, 54”, 60”, 66”, 72” | Standard: 12”, 15”, 16”, 18”, 24”, 30”, 32”, 36” |
| Closed & Case-Type: 23.75” – 143.75” | Custom: 12” – 72” on 1” increments | Custom: 9” – 36” in 1” increments |
*Max Width for Perforated Shelf is 48”
Featured options include:

Spacesaver Totes integrate seamlessly with 4-post shelving (15" wide, 18" deep). Available in 3", 6", 9", and 12" heights, they can be rail-mounted or placed directly on shelves, with optional lids and dividers for added organization.
What makes FreeSpan™ different from traditional 4-post shelving?
Its patent-pending clip system allows fast, tool-free shelf adjustments in ¾" increments while maintaining the strength and configurability of traditional systems.
Do I need tools to adjust shelves?
No. Shelves can be repositioned quickly using the clip system—up to 3X faster than traditional shelving.
Is it compatible with existing systems?
Yes. FreeSpan™ is fully backward compatible with Spacesaver 4-post shelving and integrates with mobile and flexible systems.
What shelf types are available?
Plain, Universal Slotted, and Perforated—all with easy pull-out adjustability.
Does perforated shelving meet NFPA standards?
Yes. Made from 18-gauge steel with 51% perforation (up to 48" wide), it supports airflow and fire suppression requirements.
With over 50 years of experience in space optimization, Spacesaver Storage Solutions is ready to help. Request a no-obligation site assessment to see how FreeSpan™ Shelving can transform your space.
4-Post FreeSpan™ Shelving is Spacesaver's next-generation steel shelving system designed for maximum flexibility, durability, and long-term performance. It features an innovative patent-pending clip system that allows tool-free shelf adjustments in ¾-inch increments, making it ideal for organizations with changing storage requirements.
Unlike traditional systems, FreeSpan™ uses a patent-pending double-rivet clip that allows shelves to be repositioned up to three times faster without tools. The system also provides finer ¾-inch shelf adjustments, improved strength, and compatibility with numerous accessories.
FreeSpan™ Shelving is commonly used by:
Its flexibility makes it suitable for nearly any organization requiring organized, adaptable storage.
Yes. One of FreeSpan™ Shelving's biggest advantages is completely tool-free shelf adjustment. Staff can quickly reconfigure shelving without dismantling the unit, reducing downtime and labor costs.
Shelf adjustments can be completed up to three times faster than traditional 4-post shelving thanks to the patented clip system.
FreeSpan™ offers several shelf styles, including:
This allows organizations to tailor storage for virtually any application.
Yes. FreeSpan™ Shelving integrates seamlessly with Spacesaver high-density mobile storage systems and flexible shelving units, allowing organizations to maximize floor space while maintaining easy access to stored materials.
Yes. FreeSpan™ shelves are backward compatible with existing Spacesaver 4-post shelving systems, making upgrades simple without replacing the entire storage system.
Yes. FreeSpan™ Shelving meets ANSI MH28.1-2024a standards and has been tested to a 2X safety factor for dependable long-term performance.
A wide range of accessories is available, including:
These accessories allow the shelving to adapt as storage needs evolve.
Yes. Perforated shelves are available for applications requiring improved airflow, ventilation, or fire suppression compliance. They are manufactured from 18-gauge steel and provide approximately 51% perforation on qualifying sizes.
Absolutely. The modular design allows shelving units to be expanded, reconfigured, or upgraded as your storage requirements change, protecting your investment over time.
Yes. Museums, archives, libraries, and special collections benefit from the precise adjustability, secure storage options, and extensive accessories that help protect valuable collections while maximizing storage capacity.
Yes. FreeSpan™ is engineered with heavy-duty welded uprights and optional shelf stiffeners to safely support demanding storage applications while maintaining structural integrity.
FreeSpan™ Shelving is available in numerous standard and custom dimensions, including:
This flexibility allows the system to fit nearly any room or storage layout.
Spacesaver Storage Solutions provides complete project support throughout Virginia, including:
Our experienced team helps organizations implement storage systems that improve efficiency, maximize available space, and adapt to future growth.