Does weight matter when shipping with Regional Rate boxes?
Dec 10, 2015· Last updated: December 10, 2015. ordorohowto. USPS / Shipping Labels. Yes. Each Regional Rate box has it's own weight limit listed below: Box A: Maximum weight limit of 15 pounds. Box B: Maximum weight limit of 20 pounds. B ox C: Maximum weight limit of 25 pounds. You can learn more about Regional Rate boxes on this USPS page.