Corrugated void fillers are recyclable cardboard inserts that fill empty spaces between pallets or freight units to prevent movement during transit.

They expand into gaps inside trailers, railcars or containers, locking loads securely in place to reduce damage. Millwood’s Center Drop and Dual Drop designs stabilize both center and side voids, improving safety and efficiency in transport. Their collapsible construction makes them easy to deploy, remove and store, while the recyclable material supports sustainability goals. Each void filler is engineered and validated in Millwood’s ISTA-certified lab to ensure reliable performance under real shipping conditions and help reduce freight claims.

They install faster, collapse flat for storage and are fully recyclable, unlike airbags or foam.

Airbags need inflation equipment, while foam takes up space and isn’t easily recyclable. Millwood corrugated void fillers expand instantly to fit load gaps without tools or air systems. They secure cargo efficiently, reduce setup time and eliminate waste from single-use materials. This durability allows multiple reuses, lowering cost per trip. Their clean design also avoids mess and disposal issues associated with foam, providing a sustainable, lightweight alternative that performs reliably in high-volume or long-distance freight applications.

Yes. Each void filler can be reused for multiple shipments and recycled at the end of its service life.

Constructed from durable corrugated fiberboard, Millwood void fillers are designed for repeated compression and expansion cycles. After use, they collapse flat for compact storage, maintaining their integrity through multiple load cycles. Once they reach end-of-life, they can be easily processed through existing cardboard recycling programs. This reusability lowers total packaging costs and reduces waste compared to disposable dunnage materials. Millwood’s sustainable design ensures customers meet environmental targets while improving supply chain efficiency.

They’re ideal for freight with gaps between pallets or units that risk shifting during transit.

Industries like food, beverage, consumer goods and manufacturing rely on them for stability in trailers, containers and railcars. Corrugated void fillers prevent load movement in both single-pallet and multi-pallet configurations, improving load balance and reducing claim rates. They’re especially valuable in intermodal shipping, where loads experience vibration and directional shifts through multiple handoffs. Using Center Drop and Dual Drop designs, customers achieve greater protection and consistency for various load profiles and packaging types.

Yes. Millwood engineers every void filler to fit your load, trailer type and stability requirements.

Customization options include adjusting width, length, flute grade or reinforcement based on product weight and transport conditions. Our in-house ISTA-certified lab validates each custom design under real shipping stresses like vibration, tilt and compression. The result is optimized fit, reliable strength and efficient deployment for any freight type. Custom engineering ensures each filler performs consistently and cost-effectively, protecting your loads while aligning with sustainability and sourcing standards across your operations.

Yes. Millwood provides corrugated void fillers across North America through a reliable, integrated network.

With 37 manufacturing facilities and 250+ partner locations, Millwood delivers consistent quality and short lead times wherever you operate. Our national presence means faster response, simpler logistics and fewer vendor touchpoints. Customers benefit from local availability backed by centralized engineering and testing support. Whether you’re shipping regionally or managing a national network, Millwood provides the same dependable corrugated packaging solutions with unified service and scalability.