【20PK 12 X 12 X 12" Shipping Boxes】 Each carton measures 12×12×12 inches when assembled, with a net weight of 1.03 lbs. Flat pack size: 24.4 X 24.8 X 0.2 inches. Bundle size for 20 boxes: 24.4 X 24.8 X 6.29 inches. Total bundle weight: 20.6 lbs. Made from 0.1-inch thick B-flute single-wall corrugated cardboard with 150 lbs burst strength, these boxes are designed for reliable shipping and storage needs【Custom Orders Welcome】No minimums. Can print your logo. Custom size - this takes about 12 weeks【Durable Material】Crafted from heavy-duty kraft paper with reinforced B-flute corrugation, these boxes provide excellent burst resistance and compression strength. Standard manufacturing ensures precise 90° corners, firm structure, and seamless lid closure, keeping contents safe and secure【Versatile Use】With strong structure and professional appearance, these boxes are perfect for shipping small to medium-sized items for books, files, stationery, kitchen appliances, shoes, clothing, gift boxes, bedding, and household goods. Suitable for moving, storage, or e-commerce shipping, these cartons maximize both protection and space efficiency【Usage Note】Cartons may have minor size or texture variations due to manufacturing or weather conditions, without affecting normal use. In humid seasons, boxes may soften after moisture absorption—simply place in a dry, ventilated area for 2–3 days to restore firmness. Bundles are secured with tape; cut tape before use to avoid tearing【Recommend Tape, and Tape Gun】Recomend our 2" x 110' clear tape: 14427-P. Here is the link: https://www..com/index.php?_route_=Sealing_Tape_14427-12PK&search=14427. Also, we recommend the tape gun: 14398. Here is the link: https://www..com/index.php?_route_=Tape_14398&search=14398【Product Video】Video Instructions link: https://youtu.be/_DVuNZ0IbkA. You can also search "12X12X12 RSC corrugated cardboard box 32 ECT singlewall strong cub 1 cubic feet" on youtube to locate the video.