60 size cardboard boxes, 230mm x 230mm x 90mm, 39 boxes I purchased these by mistake. Made by Earth Cardboard Co. These are made-to-order items and cannot be returned, so I am listing them here. Manufacturer's product page URL: https://www.bestcarton.com/cardboard/flex/X0001.php?as=230&bs=230&cs=90&fl=3