Supply Air 15x12 Corrugated Shipping Boxes – Single-Wall Cardboard Mailer Boxes for Packing, Moving & Storage (Multiple Pack Sizes)

Highlights

• CONSTRUCTION: Single-wall corrugated cardboard boxes with 32 ECT (Edge Crush Test) rating, consisting of one layer of fluted medium between two kraft linerboard sheets. Brown exterior finish. Manufactured in the United States from and virgin fiber blend.
• DIMENSIONS: Each box measures 15 inches length × 12 inches width. Height varies by pack size selected. Interior usable space is approximately 0.25 inches smaller per axis due to material thickness. Ships flat (knocked down) to reduce storage footprint and dimensional weight.
• ASSEMBLY: Boxes ship flat and require manual assembly by folding along pre-scored lines. Flaps close by overlapping and require external sealing with packing tape or adhesive strip (not included). No tools needed for assembly.
• MATERIAL COMPOSITION: Single-wall corrugated fiberboard constructed from kraft paper linerboard and medium fluting. Absorbs minor impacts during transit. Provides moisture barrier under standard shipping conditions (not waterproof).
• PACK QUANTITIES: Available in multiple pack sizes ranging from 6 boxes to 50 boxes per order. All boxes within each pack share identical 15x12 dimensions and 32 ECT construction specifications.

Description

Supply Air 15x12 corrugated shipping boxes are constructed from single-wall corrugated cardboard with a 32 ECT (Edge Crush Test) rating. Each box measures 15 inches in length, 12 inches in width, and varies in height depending on the selected pack size. The brown kraft exterior provides a neutral shipping appearance. These boxes are manufactured in the United States from and virgin fiber content. The single-wall corrugated construction consists of one layer of fluted medium sandwiched between two linerboard sheets, creating a rigid structure that maintains shape during stacking and transit. Assembly requires folding along scored lines and sealing flaps with tape or adhesive. The boxes accommodate items measuring up to the interior dimensions, which are approximately 0.25 inches smaller than the stated outside dimensions on each axis to account for material thickness. Common contents include books, electronics, clothing, small appliances, and general merchandise. The corrugated cardboard material absorbs minor impacts during handling and provides a moisture barrier under normal shipping conditions. Pack quantities range from 6 to 50 boxes per order, with all units in each pack sharing identical dimensions and construction specifications.