Improve packing time while reducing labor. Apply to Machine Operator, Manufacturing Specialist, Electronics Technician and more! BoxSizer – the only machine on the market that can right-size multiple pre-loaded box footprints arriving at random to the infeed, reducing costs around labor, void fill and shipping – all without the need for changeover. WestRock Box On Demand. Tel: 877-326-3653. Better fitting packages mean happier consumers and fewer product damage claims. If you're interested in using less fiber, eliminating void fill and reducing your DIM weight charges, then we'd love to connect and discuss what solutions would be right for your business. Reduced packaging and shipping costs by 20% and decreased packing time by 25% using WestRock’s Box On Demand® solution. Strong box demand helps WestRock in Q4