Which inventory management technique processes material through a plant and into finished goods without entering a formal stock area?

• A. Unitization
• B. Total line-haul cost
• C. VOC
• D. Wall-2-wall inventory

Answer: (D)

Wall-to-wall inventory describes moving material directly through the plant from the point of receipt to production and into finished goods without passing through a formal stock area. This approach keeps parts and materials at or near the point of use, minimizing handling, storage time, and the need for a central warehouse. The scenario fits this concept because it emphasizes flow through the plant with no formal stockroom entry, aligning with a lean, just-in-time mindset where materials are pulled to where they are needed.

Other options don’t capture that in-plant flow without a stock area. Unitization is about bundling items into usable units for easier handling, not about bypassing formal stock. Total line-haul cost is a transportation-cost concept within or between facilities and isn’t about internal plant flow. VOC (Voice of the Customer) focuses on customer requirements, not the movement and storage of materials inside the plant.