The XpresspaX OverpaX shipping cartons are the certified method of shipping XpresspaX containers in a secure and protective package. The foam end-caps help protect your media from damage due to impact, and the carton keeps the contents "blind" to help reduce possible theft or breach. Perfect for third-party shipments. Available for Single-tray Container or Dual-tray Container, please specify. End-caps and cartons are reusable numerous times. Packed 3 complete sets per master carton - must be ordered in units of 3. Master carton includes three outer cartons and six foam end caps. Plastic containers sold separately.