Where can you find large cardboard boxes?

Buy large cardboard boxes from HomeDepot.com and UHaul.com as of 2015. These websites offer boxes intended for both moving and storage and in various dimensions.

U-Haul offers cardboard moving and storage boxes in a range of sizes. The extra-large box available from U-Haul has dimensions 24-by-18-by-24 inches. A large box from the same company has dimensions 18-by-18-by-24 inches. These boxes may be purchased individually, though the company offers a discount to customers purchasing 10 or more boxes at a time.

The Home Depot offers large boxes with dimensions including 18-by-18-by-24 inches or 22-by-22-by-21 inches. The largest boxes available at The Home Depot cost around $2 each.