I believe you may be referring to a wooden storage box or chest that has dimensions of 6 feet by 7 feet, based on the information you provided earlier. Wooden storage boxes or chests are used to store various items such as tools, clothing, or other household items, and are commonly made from materials such as cedar, pine, or oak. They can have various designs and styles, such as hinged lids, lockable latches, or decorative accents.
If you are interested in purchasing or finding more information about a wooden storage box or chest with the dimensions you mentioned, I suggest searching online or at local furniture or storage retailers. You may also want to consider contacting a custom woodworker or carpenter to design and build a box to your exact specifications.