11 1/2 x 11 1/2 x 15 3/8" Double Wall Corrugated Boxes - Heavy-Duty Protection for Critical Shipments
These double wall corrugated boxes deliver twice the protection of standard single-wall cartons, making them the preferred choice for shipping heavy items, fragile products requiring extra cushioning, and operations demanding superior stacking strength. Constructed from 275# D.W. kraft corrugated with an ECT-48 edge crush rating, these boxes provide reliable performance in demanding warehouse and distribution environments.
Product Specifications
- Dimensions: 11 1/2" L x 11 1/2" W x 15 3/8" H (interior)
- Material: Double wall kraft corrugated cardboard
- Strength: 275# Mullen burst test, ECT-48 edge crush rating
- Wall Construction: Two layers of corrugated medium between three liners
- Packaging: Sold in bundle quantities, ships flat
- Color: Natural brown kraft
Double Wall Construction Advantages
Double wall corrugated features two layers of fluted medium sandwiched between three flat linerboards, creating a structure significantly stronger than standard single-wall boxes. This construction provides:
- Enhanced Impact Resistance: Additional cushioning layer protects contents from drops and handling damage
- Superior Stacking Strength: Maintains integrity when stacked multiple units high in warehouse storage
- Puncture Protection: Thicker wall structure resists tears and punctures from sharp edges
- Climate Resilience: Better moisture resistance and structural stability across temperature variations
Industrial Applications
Manufacturing & Distribution: Ship heavy machinery parts, automotive components, industrial tools, and equipment weighing up to 65 pounds per carton. The ECT-48 rating ensures boxes maintain structural integrity throughout the supply chain.
E-Commerce Fulfillment: Ideal for multi-item orders requiring extra protection, electronics packaging, or products with higher return rates where box reusability matters. The square footprint maximizes pallet efficiency.
Food & Beverage: Package bulk quantities of canned goods, jarred products, or bottled items requiring puncture resistance and stacking stability during transport and cold storage.
Moving & Storage: Recommended for books, records, small appliances, and other dense items where weight concentration demands reinforced construction. The uniform dimensions simplify stacking and organization.
Export Shipping: Meet the durability requirements of international freight, where cartons endure multiple handling touchpoints and extended transit times.
Technical Performance
The 275# Mullen burst test rating indicates the pounds per square inch of pressure the box can withstand before bursting. Combined with the ECT-48 edge crush rating (measuring pounds of force per linear inch), these boxes support stacking loads up to 120 pounds when properly palletized.
Ships flat to minimize storage footprint and freight costs. Boxes assemble quickly without special tools or tape guns for high-volume packing operations.
Why Choose Prism Pak
As a direct wholesale distributor based in Berwick, Pennsylvania, Prism Pak offers competitive bundle pricing on industrial-grade corrugated packaging. Our heavy-duty double wall boxes meet rigorous commercial specifications for operations requiring reliable protection without the markup of big-box suppliers.
