The box is 10 3/4" square.
Shipping: I ship almost all of my pieces via USPS Priority Mail, insured, signature required. The signature is required for insurance. Most items in the lower 48 arrive in 2-3 days. If you are not concerned about insurance (if it is damaged and not insured you have no recourse) and a speedy delivery, ask me to ship it the cheapest way in the order comments. I will gladly refund the difference between what you paid and what it costs. Typically the difference is $5 to $10 dollars.