Supply Air 8x5x4 Corrugated Shipping Boxes – Cardboard Mailer Boxes for Packing, Moving & Storage (Multiple Pack Sizes)

Highlights

• Supply Air 8x5x4 Corrugated Shipping Boxes are constructed from single-wall corrugated cardboard with a 32 ECT (Edge Crush Test) rating. Each box measures 8 inches long × 5 inches wide × 4 inches tall (interior dimensions). The three-layer construction consists of an outer kraft liner, fluted corrugated medium, and inner kraft liner. Brown kraft exterior provides a printable surface for shipping labels and documentation
• DIMENSIONS: Interior usable space measures 8 × 5 × 4 inches. Exterior dimensions when assembled measure approximately 8.25 × 5.25 × 4.25 inches. Each flat (knocked-down) box measures 13 × 8 × 0.3 inches thick. Accommodates items up to 7.75 × 4.75 × 3.75 inches when allowing clearance for internal cushioning materials
• WEIGHT: Each individual box weighs approximately 0.15 pounds in flat state. Total pack weight varies by quantity selected (25-pack ≈ 3.75 lbs, 50-pack ≈ 7.5 lbs, 100-pack ≈ 15 lbs, 200-pack ≈ 30 lbs). Single-wall corrugated construction provides structural support while maintaining a per-unit weight of 0.15 lbs
• CONSTRUCTION: Regular Slotted Container (RSC) design with four flaps that fold to meet at the center. Boxes ship flat and assemble by folding along pre-scored edges. Flaps close and seal with packing tape (tape sold separately). The 32 ECT rating indicates the cardboard resists 32 pounds per linear inch of crushing force during vertical compression stacking
• MATERIAL: Single-wall corrugated cardboard composed of 3 layers — outer kraft paper liner, corrugated fluted medium core, and inner kraft paper liner. Brown kraft paper exterior (uncoated). Cardboard thickness measures approximately 0.125 inches (1/8 inch) when assembled

Description

Supply Air 8x5x4 Corrugated Shipping Boxes are manufactured from single-wall corrugated cardboard with a 32 ECT (Edge Crush Test) rating. Each box measures 8 inches in length, 5 inches in width, and 4 inches in height (interior dimensions). The brown kraft exterior provides a neutral surface for labeling and shipping documentation. These boxes are constructed using a Regular Slotted Container (RSC) design with four flaps that fold to meet at the center when closed. Each box ships flat (knocked down) and assembles by folding along the scored edges. The flaps close and secure with standard packing tape (tape not included). This listing is available in multiple pack quantities to accommodate varying volume needs. Each unit weighs approximately 0.15 pounds in its flat state. The boxes accommodate items measuring up to 7.75 x 4.75 x 3.75 inches when allowing clearance for protective packaging materials. Manufactured in the United States. The 8x5x4 dimension creates a rectangular footprint suitable for items that require more length than width or height.