Juniper J-series Services Router J2350 Hardware Manual page 199

Chapter 10: Contacting Customer Support and Returning Hardware
When you return components, make sure they are adequately protected with
packing materials and packed so that the pieces are prevented from moving
around inside the carton.
Use the original shipping materials if they are available.
Place individual boards in electrostatic bags.
Write the RMA number on the exterior of the box to ensure proper tracking.
CAUTION: Do not stack any of the router components.
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Packing a Router or Component for Shipment