Span Track Lane — The Original All-Metal Carton Flow

From UNEX comes the original carton flow rack—a time-tested gravity flow solution with all-metal construction that supports your product like no other.

Optimize your picking with Span Track Lane to decrease travel time and increase throughput by up to 150%. Each system is configured to your rack, carton type, and pick strategy—not sold off the shelf.

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Span Track Lane Features

An all-metal roller surface gives Span Track Lane the durability to harmonize warehouse operations year after year.

Attaches to pallet racks with a drop-in design for easy installation
Impact zones at the load end protect against replenishment damage
Built-in label holders
Rated to withstand temperatures down to -20°—suitable for cold storage
Patented interior notching saves vertical space
Light, standard, and heavy-duty options with customizable ends and to-the-inch sizes
Backed by a 7-year warranty

Lane or Bed? When to Choose Span Track Lane

Span Track comes in two main varieties: Bed and Lane. The roller Lane configuration is the better choice when you need flexibility and easy reslotting as your SKUs change.

Flexibility: effortless reslotting with fins for changing track size
Versatility: works with multiple carton sizes
All-metal roller construction for long-term durability

Need maximum product contact and stacking capacity instead? See Span Track Bed, which provides up to 300% more product contact for weaker boxes.

Span Track Lane Configurations

Span Track Lane is available in a number of configurations to suit your unique applications.

Low Profile

Nests between beams on hangers for maximum use of vertical space. Used for full-case or each-pick, and perfect for racks with pallet storage above.

High Profile

Rests on rack beams for loose-pick applications or where contouring racks is preferred. The fully adjustable overhang lets track extend beyond pallet rack depth.

Knuckles

Available for low and high profile tracks. Angled at 20° for increased efficiency in open-box picking.

Hangerless

Adjustable-length track sits on the ledge of step beams front and rear, keeping the face of the beam clear.

Pick Trays

Present open cases to order pickers so product can be picked without interference and in full sight.

Deck Track

Pushback-style for loading and picking from the front. Usually used against walls.

Cell Track

Use in a flow cell to create a modular, dynamic storage unit designed for your operation.

Tech Specs

Span Track Lane rollers are built to handle a wide range of carton weights and sizes. Final capacities are confirmed during configuration.

Duty ratings: light, standard, and heavy-duty capacities to match your load per foot
98 & 99 series: 0.75" roller (aluminum or steel)
100 series: 1.38" roller (steel/bearing)
Available in custom, to-the-inch sizes with customizable ends

Accessories

Add accessories to fine-tune flow, protect loads, and make picking faster and safer.

Impact Plates

Steel protection to handle the toughest loading conditions.

Slow Down Strips

Add friction to slow cartons before transfer to knuckles or trays.

Pressure Relief Stops

Ramp stop that eases back pressure to make the front-case pick easier.

Infeed Guides

Snap onto the axle to indicate locations and guide replenishment.

Guard Rails

Available for select models.

Real-World Example

Southern Wine & Spirits, the largest distributor of wine and spirits in the country, uses Span Track flow rack systems at its Santa Fe Springs, CA and Louisville, KY facilities to keep 12,000+ SKUs rolling and balance inventory across multiple warehouses.

Read the Case Study

See Span Track Lane in Action

Frequently Asked Questions About Span Track Lane

Shelving.com helps warehouse, distribution, and fulfillment teams choose between Span Track Lane and Bed, select the right configuration, and gather the details needed before requesting a quote.

What is Span Track Lane carton flow?

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Span Track Lane is UNEX's original all-metal roller carton flow rack. It mounts in pallet rack and uses gravity to move cartons to the pick face, decreasing travel time and increasing picker throughput by up to 150%.

What's the difference between Span Track Lane and Span Track Bed?

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Lane uses an all-metal roller surface built for flexibility and effortless reslotting as SKUs change. Bed uses a full-width wheel surface that provides up to 300% more product contact—better for stacking capacity and supporting weaker boxes. Both attach to pallet racks and handle multiple carton sizes.

What configurations does Span Track Lane come in?

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Low Profile, High Profile, Knuckles, Hangerless, Pick Trays, Deck Track, and Cell Track. Each suits a different picking style or rack setup, and tracks are available in custom, to-the-inch sizes.

Can Span Track Lane be installed in my existing pallet rack?

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Yes. Span Track Lane uses a drop-in design that attaches to pallet racks for easy installation, and profiles like Hangerless and Low/High Profile integrate with existing beams and step beams.

Does Span Track Lane work in cold storage?

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Yes. Span Track Lane is rated to withstand temperatures down to -20°, making it suitable for refrigerated environments, and it's backed by a 7-year warranty.

How do I get a quote for Span Track Lane?

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Share your rack dimensions, carton sizes and weights, and pick strategy. We'll recommend the right configuration, roller series, duty rating, and accessories, then quote the system. Span Track Lane is configured to your operation rather than sold as a standard add-to-cart item.

Carton Flow & Picking Resources

Span Track Lane works hand in hand with the rest of our carton flow and picking systems. Explore related solutions to design a complete pick line for your operation.

Span Track Bed

The wheel bed carton flow option. Span Track Bed provides up to 300% more product contact for weaker boxes and up to 90% space utilization—ideal for picking and perishables.

View Span Track Bed →

Roller Racks

Standalone or bayed carton flow racks built on Span Track. Up to 7x more SKU density per bay than pallet rack and 80% less travel time for pickers.

View Roller Racks →

Pick Shelves

Angled steel pick shelves that kill the rear dead zone. Add them to Span Track for partial-case picks or use them alone for slow movers.

View Pick Shelves →