Question: what size are ups boxes?
Answer: UPS Express Box - Small: 13in x 11in x 2in. UPS Express Box - Medium: 16in x 11in x 3in. UPS Express Box - Large: 18in x 13in x 3in; weight limit 30lbs. UPS PAK: Padded, secure, or watertight boxes for sensitive or regulated items; size varies.