A put wall is a light-directed sorting station that can be used in receiving, packing, and shipping operations to direct operators in placing inventory items into slots or containers associated with specific orders, warehouse zones, or store locations.  A put wall can consist of a simple wall of mail slot type openings or complete racking systems in which cartons, totes, or even Gaylord containers are used as the sort destination.

A put wall utilizes Put Quantity Displays (or PQDs) to direct each “put” (or sort) to a specific location in the wall while specifying the quantity of each item needed.

A bright, alpha-numeric display, a PQD uses LED light to draw an operator’s attention and then direct the put without the need for paper lists or voice directed headsets.

Put wall PQD

A PQD used in a put wall to draw an operators attention.

Put walls, as part of a put-to-light system, offer a highly efficient and exceptionally accurate order fulfillment solution for distribution operations with a large number of SKUs and a high number of orders to fill. This can include omni-channel retailers and wholesalers with e-commerce and store replenishment demands.


Receiving from a mixed container in preparation for sorting to a put wall.

A put wall can also be highly useful for a receiving operation that receive goods in mixed containers, which need sorting prior to put away.

In such operations, a put wall can considerably reduce walking in the put away process by facilitating the batching of items for delivery to warehouse zones, aisles, or designated storage media.

How a Put Wall Works:

Items being sorted to a put wall are often batch picked (or received) before being delivered to the put-to-light area. The put wall operator then selects individual items for sorting and scans them with and RF terminal.  Invata’s warehouse execution software then directs the put process by illuminating a PQD showing the operator where to place the item. If there is more than one of that SKU required to fulfill that order in the batch, the PQD can also indicate the quantity of that item needed to complete fulfillment.


Put wall directing an operator to put to a tote which can represent a specific order, a warehouse aisle or zone, or a retail store location in need of replenishment.

Once an operator places the item(s) in the put container, s/he confirms the task by depressing a button on the PQD. All confirmed task information is updated to the host ERP on real time basis via Invata’s warehouse software.

Put walls require minimal training, enabling the use of both temporary warehouse workers and those with language barriers to help meet seasonal demands.

put wall task confirmation

An operator confirms a put to a designated location.

Put Wall Integration Considerations


Put walls are an effective way to manually sort items to designated containers.

Of equal importance to the performance of a put wall is the warehouse management system (WMS) and warehouse control system (WCS) software used to integrate a put wall into a put-to-light system.

Invata’s own FastTrak® warehouse execution system is a key asset to achieving optimal performance for put walls of all types.

To learn more about what an Invata put wall can do for your operation, contact us. We’ll be happy to share more about our rich history of employing put wall technology to enhance order selection productivity.

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