Supply Air 9x4x3 Corrugated Shipping Boxes – Cardboard Mailer Boxes for Packing, Moving & Storage (Multiple Pack Sizes)

Highlights

• Supply Air 9x4x3 corrugated shipping boxes are constructed from single-wall corrugated cardboard with a 32 ECT rating, measuring 9 inches length by 4 inches width by 3 inches height interior dimensions. Each box ships flat and assembles by folding along pre-scored lines without requiring tape or adhesive for assembly. The natural brown kraft exterior consists of corrugated fiberboard with a fluted medium layer between two flat linerboard sheets
• DIMENSIONS: Interior usable space measures 9 inches long x 4 inches wide x 3 inches tall, accommodating items up to 8.75 x 3.75 x 2.75 inches to allow 0.25 inch clearance on each side. Exterior dimensions when assembled measure approximately 9.5 x 4.5 x 3.5 inches including material thickness
• MATERIAL CONSTRUCTION: Single-wall corrugated cardboard with 32 ECT (Edge Crush Test) rating, indicating the material withstands 32 pounds per linear inch of edge compression before failure. The corrugated medium consists of fluted paper creating air channels between two kraft linerboard outer layers
• CLOSURE MECHANISM: Overlap-style flaps on top and bottom seal by folding and securing with packaging tape. The scored fold lines create clean edges when erected from flat position. No adhesive or staples are integrated into the box construction
• QUANTITY OPTIONS: Available in pack sizes of 25, 50, 100, and 200 boxes per order. Each box ships knocked-down flat, reducing storage volume by approximately 90 percent compared to pre-assembled cartons. Flat stack height for 100 boxes measures approximately 30 inches

Description

Supply Air 9x4x3 Corrugated Shipping Boxes are constructed from single-wall corrugated cardboard with a 32 ECT rating. Each box measures 9 inches in length, 4 inches in width, and 3 inches in height, providing an interior volume suitable for small to medium items. The boxes ship flat and assemble without tape or adhesive by folding along scored lines. The natural brown kraft exterior resists surface abrasion during handling. Each carton contains boxes manufactured in the United States from corrugated fiberboard. The rectangular form factor accommodates items measuring up to 8.75 x 3.75 x 2.75 inches. Available in pack quantities of 25, 50, 100, and 200 boxes to match shipping volume requirements. The single-wall construction consists of one fluted corrugated medium sandwiched between two linerboard sheets. The 32 ECT (Edge Crush Test) rating indicates the material withstands 32 pounds per linear inch of stacking force before compression. Boxes ship knocked-down flat and expand to full dimensions when erected. The overlap flap closure seals with standard packaging tape. Each unit weighs approximately 0.32 pounds when flat. Manufactured from corrugated cardboard stock meeting ASTM D4727 standards for single-wall board.