Warehouse Put-Wall Systems: Cut Fulfillment Time 40% Without New WMS

By
Nicole Wilson
June 22, 2026
5 min read
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Definition

Put Wall is a freestanding warehouse structure divided into numbered cubbies — each typically equipped with a small digital display panel and confirmation button — used to sort and assemble individual orders from large batch picks before packaging. The put wall sits between the picking operation (where items are pulled from inventory in large batches) and the packing operation (where individual orders are boxed and labeled), dramatically accelerating order assimilation by organizing items into order-specific slots in real time. Put walls handle both mixed-SKU and single-SKU orders and are particularly well-suited for high-volume distribution center environments where multiple orders contain overlapping items that can be picked efficiently in a single pass.

Distribution centers handling high volumes of e-commerce and wholesale orders face a fundamental efficiency problem at the boundary between picking and packing: items are most efficiently picked in large batches across multiple orders, but packing requires those items to be organized by individual order. The put wall is the solution to this transition — a physical sorting mechanism that converts a batch of mixed items into organized, order-specific slots that packers can process without searching, matching, or manual sorting.

Quick Answer

A put wall is a warehouse structure divided into numbered cubbies used to sort batch-picked items into individual orders before packing. The process: large batches of items are picked, brought to the wall, and each item is scanned. The wall's system lights up the cubby corresponding to the order that needs that item. The picker places it and confirms with a button press. Once all items for an order are assembled, the packing side signals readiness — indicating box size, carrier, and priority. Robotic put walls, like Berkshire Grey's AI-powered version, can process up to 240 simultaneous orders compared to the industry average of 80 for manual walls.

What a put wall is and where it fits in the fulfillment operation

TL;DR

A put wall is a freestanding structure divided into numbered cubbies — each with a digital display and confirmation button — positioned between the batch picking operation and the individual order packing operation. It handles the order assimilation step: converting a batch of items picked across multiple orders into organized, order-specific slots that enable fast, accurate packing. Put walls handle both mixed-SKU and single-SKU orders, are well-suited for high-volume items, and compress the space required for order sorting while increasing throughput. The picker workspace faces the front of the wall; the packing workspace faces the back.

  • Handles mixed- and single-SKU orders efficiently: Put walls are not limited to simple orders with one item type. They handle complex mixed-SKU orders where multiple different items need to be assembled into the same cubby from multiple picking passes.
  • High volume in a small footprint: By stacking many cubbies vertically and horizontally, put walls concentrate a large amount of simultaneous order processing into a small floor area — an important efficiency in distribution centers where floor space is a constrained resource.
  • Dual-sided workspace: The freestanding design provides a picker-facing front side for placing sorted items and a packer-facing back side for accessing completed orders ready for boxing — separating the two operations spatially and allowing them to proceed simultaneously.

How a put wall works — the pick, scan, sort, and pack sequence

TL;DR

The put wall process begins when a picker scans their tote or batch container, alerting the system to the incoming items. Each item is scanned, and the wall's system lights the cubby corresponding to the order that needs it. The picker places the item, confirms with a button press, and moves to the next item. Some systems light multiple cubbies simultaneously for items needed across multiple orders, allowing a single item scan to trigger placements in several cubbies at once. When all items for an order are assembled, the packing side signals readiness with box size recommendation, shipping carrier, multi-cubby order flags, and priority information.

  • Step 1 — Tote scan: The picker scans the tote or bin containing the batch of picked items. The put wall system registers the batch contents and prepares to route each item to its correct order cubby.
  • Step 2 — Item scan and cubby assignment: The picker scans each item. The system identifies which order needs that item and lights the corresponding cubby. For items needed by multiple orders simultaneously, some systems light multiple cubbies at once — allowing the picker to place the item in each and confirm with a button press per cubby before moving on.
  • Step 3 — Confirmation: After placing an item in the lit cubby, the picker presses the cubby's confirmation button — notifying the system the put is complete and the wall can update the order's status. This confirmation step prevents errors from accumulating silently.
  • Step 4 — Packing signal: When all items for an order have been placed, the back side of the wall signals the packing team that the order is complete and ready. The display communicates the recommended box size, the shipping carrier, any multi-cubby order flags, and the packing priority — giving packers all the information they need without additional system lookups.
  • Step 5 — Cubby reassignment: As soon as the items are packed and the cubby is cleared, the system reassigns it to a new order — keeping the wall fully utilized throughout the shift.

Robotic put walls — AI-powered automation for high-volume fulfillment

TL;DR

Robotic put walls replace the manual picker with AI-powered robotic systems that scan, sort, and place items automatically. Berkshire Grey introduced its AI-powered Robotic Shuttle Put Wall (RSPW) in September 2021 — processing up to 240 simultaneous orders compared to the industry average of 80 for manual put walls. The system addresses both throughput limits and the labor availability challenges that make manual fulfillment scaling difficult during peak demand periods.

Berkshire Grey's Robotic Shuttle Put Wall represents the next evolution of put wall technology: instead of a human picker scanning and placing items, AI-enabled robotics handle the sorting process automatically. According to Berkshire Grey founder and CEO Tom Wagner, the system "increases order processing speeds, optimizes the fulfillment workforce, and most importantly gets more orders out the door more quickly."

The performance difference between manual and robotic put walls is significant: the RSPW processes up to 240 simultaneous orders, compared to the industry average of 80 for manual put walls. For distribution centers managing high e-commerce volumes during peak seasons — when labor is simultaneously scarce and most needed — robotic put walls provide throughput that manual systems cannot match.

Return on investment and put wall provider options

TL;DR

Put walls deliver ROI through two primary mechanisms: increased throughput (more orders processed per shift means more revenue per square foot of DC space), and improved accuracy (reduced error rates mean lower return volumes and higher customer satisfaction). The systems are customizable to specific warehouse configurations and can be scaled incrementally — starting small, evaluating performance, and expanding as volume and confidence grow. Multiple vendors offer put wall solutions, including Berkshire Grey, Lucas Systems, Honeywell Intelligrated, Softeon, and Bastian Solutions.

  • Throughput improvement: Faster order assimilation means more orders shipped per shift — directly increasing the revenue a distribution center can generate from existing floor space and staff.
  • Accuracy improvement: Scan-and-confirm workflows that light the correct cubby and require confirmation before moving on reduce the picking errors that generate returns, reshipping costs, and customer dissatisfaction.
  • Scalable investment: Most put wall vendors offer customizable configurations and incremental scaling — allowing operations to start with a smaller wall, evaluate performance, and expand as volume justifies the investment.
  • Notable providers: Berkshire Grey (AI-powered robotic put walls), Lucas Systems, Honeywell Intelligrated, Softeon, and Bastian Solutions all offer put wall solutions with different automation levels, configurations, and integration approaches.

Connect Your Put Wall and WMS to Your EDI Trading Partners

BOLD VAN integrates with warehouse management systems and ERP platforms to ensure that fulfillment events — shipment confirmations, ASN transmissions, and invoice generation — flow automatically to your retail trading partners. Schedule a free demo to see how EDI automation connects your fulfillment operations to your trading partner network.

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Frequently asked questions

What is the difference between a put wall and a pick wall?

A put wall is used to sort items from batch picks into individual orders — items are "put" into order-specific cubbies. A pick wall operates in the opposite direction: inventory is stored in wall cubbies, and pickers pull ("pick") items from the wall to fulfill individual orders. Both use similar physical structures and cubby-lighting technology, but they serve different positions in the fulfillment workflow. Put walls are used after batch picking to assemble orders; pick walls combine inventory storage and order picking in a single step.

What types of fulfillment operations benefit most from put walls?

Put walls provide the most benefit in high-volume fulfillment environments where many orders contain overlapping items — the scenario where batch picking delivers the biggest efficiency gain over discrete order picking. E-commerce fulfillment operations with large SKU counts, many daily orders, and items frequently appearing across multiple concurrent orders are the primary use case. Put walls are also effective for distribution centers handling replenishment orders to retail stores, where similar item mixes appear across multiple store orders simultaneously.

How many orders can a put wall process simultaneously?

The capacity of a manual put wall depends on the number of cubbies — typically ranging from 50 to several hundred cubbies per wall. The industry average for manual put walls is approximately 80 simultaneous orders. Berkshire Grey's AI-powered Robotic Shuttle Put Wall (RSPW) processes up to 240 simultaneous orders — three times the manual average — by replacing the human picker with robotic automation that operates continuously without the speed limitations of manual sorting.

How does a put wall integrate with EDI and shipping systems?

Put walls typically integrate with the distribution center's Warehouse Management System (WMS), which in turn connects to the EDI infrastructure handling trading partner document exchange. When the put wall signals that an order is complete and ready to pack, the WMS triggers the relevant fulfillment events — including EDI 856 Advance Ship Notice generation and carrier label printing — so that the outbound EDI documents transmit to the trading partner automatically as the order is packed rather than requiring a separate manual step. BOLD VAN's EDI integration connects these WMS events to trading partner document exchange without additional manual touchpoints.

Key Facts — Summary

A put wall is a warehouse structure divided into numbered cubbies — each with a digital display and confirmation button — that converts batch-picked items into organized, order-specific slots before packing. The five-step sequence is: tote scan, item scan with cubby lighting, item placement with button confirmation, packing signal when the order is complete, and immediate cubby reassignment. Put walls handle mixed- and single-SKU orders and are particularly efficient for high-volume items that appear across many concurrent orders.

Robotic put walls — like Berkshire Grey's AI-powered Robotic Shuttle Put Wall — process up to 240 simultaneous orders compared to the industry average of 80 for manual systems. ROI comes from two sources: increased throughput (more orders per shift from existing floor space and staff) and improved accuracy (reduced returns from scan-and-confirm workflows). Put wall systems are scalable and customizable; notable providers include Berkshire Grey, Lucas Systems, Honeywell Intelligrated, Softeon, and Bastian Solutions.

Nicole Wilson
Content Manager

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