Description
HD Double Wall Cardboard Corrugated Boxes are heavy-duty shipping containers designed for protecting high-value, fragile, or dense goods during transport and storage. These 48″L x 12″W x 12″H kraft corrugated boxes provide superior cushioning and structural integrity for demanding industrial, manufacturing, and e-commerce applications.
Each box features double wall corrugated construction with a 275 lb. ECT (Edge Crush Test) rating, delivering maximum durability for stacking, palletizing, and long-distance shipping. The Kraft paper linerboard exterior resists moisture and provides a professional appearance suitable for customer-facing shipments. With exterior dimensions of 48 inches length, 12 inches width, and 12 inches height, these boxes offer substantial volume—approximately 6,912 cubic inches—while maintaining optimal weight distribution. The double-wall design features two layers of corrugated medium separated by outer and inner liners, creating a cushioning matrix that absorbs impact and prevents product damage. Each package contains 10 boxes, allowing businesses to maintain consistent inventory for regular shipping operations. The kraft material is recyclable and meets sustainability standards, supporting corporate environmental initiatives and customer expectations for eco-friendly packaging.
Industrial manufacturers, electronics distributors, automotive suppliers, and e-commerce fulfillment centers rely on these heavy-duty corrugated shipping boxes for applications including machinery parts, component assemblies, electrical equipment, automotive components, and high-value merchandise. Food and beverage distributors use them for bulk product shipments, while logistics companies and third-party logistics (3PL) providers integrate them into standardized packing protocols. These boxes excel in warehouse storage, as their structural strength supports pallet stacking without compression or collapse. Custom manufacturers and contract packagers specify this box size for its optimal cube utilization in standard shipping containers and its compatibility with automated packaging lines and material handling equipment. The 48-inch length accommodates long items while the 12×12-inch cross-section maintains manageable weight for manual handling and ergonomic packing workflows.
When selecting corrugated shipping boxes, prioritize ECT rating—the 275 lb. ECT standard indicates this box withstands significant stacking force and external pressure during transport. Verify that wall thickness and flute type (typically B-flute or C-flute in double-wall construction) match your product’s fragility and weight requirements. Consider burst strength alongside ECT, as burst tests measure resistance to internal pressure and puncture damage. Evaluate moisture resistance based on storage conditions and shipping environments, particularly for climate-controlled versus outdoor logistics. Assess box dimensions to ensure they maximize trailer space while accommodating your products without excessive void fill, reducing dimensional weight charges. Review certifications for FDA food-contact compliance if applicable, and confirm recyclability and recycled content percentages for sustainability reporting. For high-volume ordering, negotiate pricing based on pallet quantity discounts and establish reliable lead times to prevent supply chain disruptions.
What size is the interior of these 48″ x 12″ x 12″ boxes?
The interior dimensions of these boxes are approximately 47.5″ x 11.5″ x 11.5″, accounting for the thickness of the double-wall corrugated material. Actual interior measurements may vary slightly by 1/8 inch depending on manufacturing tolerances. For precise product fit assessments, measure your items and allow 0.5 inches clearance on each side to facilitate easy insertion and closure. When calculating void fill requirements, use the interior dimensions to determine cubic space and select appropriate cushioning materials like air pillows, foam inserts, or recycled paper.
What is the difference between double wall and single wall corrugated boxes?
Double wall corrugated boxes feature two corrugated layers with three linerboards, delivering approximately 2-3 times greater crushing strength than single wall alternatives. Double wall construction provides superior protection for heavy items, fragile electronics, machinery parts, and products requiring extended storage or multiple handling cycles. The 275 lb. ECT rating of double wall significantly exceeds typical single wall ratings of 32-44 lb. ECT, enabling aggressive stacking in warehouses and on pallets. Single wall boxes cost less and work for lightweight items, promotional merchandise, and short-distance shipments. Double wall is the industry standard for B2B industrial shipping, hazardous materials compliance, and export logistics where durability and damage prevention justify the premium cost.
How do I determine if these boxes will work for my stacking requirements?
Calculate your maximum stacking weight by multiplying your product weight by the number of boxes you’ll stack vertically. The 275 lb. ECT rating
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