Supply Air Corrugated Cardboard Shipping Boxes 12x12x12 Inch Brown Kraft Mailer Boxes for Packing, Moving & Storage (Multiple Pack Sizes)

Highlights

• 12x12x12 INCH CORRUGATED BOXES: Each box measures 12 inches length by 12 inches width by 12 inches height interior dimensions, providing 1728 cubic inches of usable packing space. Single-wall corrugated cardboard construction with 32 ECT (Edge Crush Test) rating. Brown kraft fiberboard exterior manufactured from content
• MATERIAL CONSTRUCTION: Corrugated cardboard with B-flute profile (50 flutes per linear foot). Three-layer construction consists of outer kraft liner, corrugated medium flute layer, and inner kraft liner. Single-wall thickness measures 0.187 inches. Each flat knocked-down box measures 24 inches by 12 inches with 0.25 inch thickness when stored flat
• WEIGHT AND CAPACITY: Each assembled box weighs 1.2 pounds. Accommodates items measuring up to 11.5 inches on each axis when accounting for protective cushioning material. 32 ECT stacking strength rating indicates vertical compression resistance before corrugate deformation begins
• ASSEMBLY AND CLOSURE: Ships flat in knocked-down configuration for compact storage. Assembly process: fold four bottom flaps inward until they meet at center, load contents, then fold four top flaps inward to close.
• PACK QUANTITIES: Available in multiple pack sizes including 25, 50, 100, 200, 400, or 500 boxes per order. Each pack contains the selected quantity of flat knocked-down boxes ready for assembly. Manufactured in the United States from domestically sourced corrugated fiberboard

Description

Supply Air 12x12x12 Corrugated Shipping Boxes are constructed from single-wall corrugated cardboard with a 32 ECT (Edge Crush Test) rating. Each box measures 12 inches in length, 12 inches in width, and 12 inches in height, providing 1728 cubic inches of interior space. The brown kraft exterior is manufactured from fiberboard. The boxes ship flat (knocked down) and assemble via interlocking flaps without requiring tape or adhesive for initial setup. The corrugated construction consists of an outer kraft liner, fluted medium layer, and inner kraft liner. Each flat box measures approximately 24 inches by 12 inches when knocked down, with a thickness of 0.25 inches per unit. The flute profile is standard B-flute with 50 flutes per linear foot. The boxes accommodate items measuring up to 11.5 inches on each axis when accounting for cushioning material. The 32 ECT rating indicates the stacking strength before the corrugate begins to deform under vertical compression. Assembly process: fold the four bottom flaps inward so they meet at the center, then fold the four top flaps inward after loading to close. Each box weighs approximately 1.2 pounds. Available in multiple pack quantities: 25, 50, 100, 200, 400, or 500 boxes per order. Manufactured in the United States.