Supply Air 6x5x4 Corrugated Cardboard Shipping Boxes – Brown Kraft Mailer Boxes for Packing, Moving & Storage (Multiple Pack Sizes)

Highlights

• Supply Air 6x5x4 Corrugated Shipping Boxes are constructed from single-wall corrugated cardboard with a 32 ECT rating and natural brown kraft finish. Each box measures 6 inches long, 5 inches wide, and 4 inches high (interior dimensions). The corrugated structure consists of an exterior kraft liner, a fluted medium layer providing cushioning, and an interior kraft liner. Available in multiple pack quantities: 25, 50, 100, or 200 boxes per pack
• DIMENSIONS: Each box measures 6 inches length × 5 inches width × 4 inches height (interior usable dimensions). The rectangular shape accommodates items measuring up to 6×5×4 inches. Material thickness is approximately 0.125 inches (single-wall corrugated construction). Each box weighs approximately 0.15 pounds when flat
• MATERIAL: Single-wall corrugated cardboard constructed from kraft paper with natural brown finish. The corrugated construction consists of three layers: exterior kraft liner, fluted medium core, and interior kraft liner. 32 ECT (Edge Crush Test) rating indicates each box withstands 32 pounds per linear inch of compression force applied to the edge
• CLOSURE: Four-flap closure system on top and bottom. Each end has four overlapping flaps that interlock by tucking the smaller flaps inside followed by the larger flaps. The flaps secure without tape for light-duty applications.
• ASSEMBLY: Boxes ship flat (knocked down) to reduce storage space and shipping costs. Each box assembles by folding along pre-scored crease lines to form the rectangular shape, then tucking the bottom flaps in the interlocking sequence. The entire assembly process requires no tools or adhesive

Description

Supply Air 6x5x4 Corrugated Shipping Boxes are constructed from single-wall corrugated cardboard with a 32 ECT rating. Each box measures 6 inches in length, 5 inches in width, and 4 inches in height (interior dimensions). The boxes are manufactured from kraft paper with a natural brown finish. The corrugated construction consists of an exterior kraft liner, a fluted medium layer, and an interior kraft liner. Each box ships flat (knocked down) and assembles by folding along scored lines and tucking closure flaps. The 32 ECT (Edge Crush Test) rating indicates the stacking strength: each box withstands 32 pounds per linear inch of compression force applied to the edge. The rectangular shape accommodates items measuring up to 6x5x4 inches. The boxes are available in multiple pack quantities: 25, 50, 100, or 200 units per pack. Each individual box weighs approximately 0.15 pounds when flat. Manufactured in the United States. The kraft cardboard construction provides a moisture barrier and cushioning for contents during transit and storage. The boxes accommodate e-commerce order fulfillment, product shipping, household moving, warehouse storage, and inventory organization. Single-wall corrugated construction consists of one layer of fluting between two liners, with a total material thickness of approximately 0.125 inches.