RMA numbers are valid for 7 days after the day of issuance. The RMA number(s) must be prominently displayed only on the shipping label of boxes containing returned goods. Do not mark the boxes themselves.Any product returned without an RMA number, incomplete and/or not in resalable condition, or with an RMA number over 15 days old, may be refused. Returned goods must be shipped freight prepaid in their original boxed and packing material. A copy of your packing list/invoice must accompany all returned products. Returned goods should be freight insured by you. Product returned to you under warranty is shipped freight prepaid via USPS or UPS Ground or other carrier at our discretion. Xiertekusa.com reserves the right to charge for shiping, handling and labor if the product received for repair is non-defective.