When I returned my sub. to Velodyne I went to a local package distribution company and purchased a double skin cardboard box for about 2 pounds I also purchased 100 metres of 500mm wide bubblewrap(much more than needed) for about 17 pounds. Together they made a secure parcel.

Rod

818v3, QNAP HS-453DX, Roon, 7200SE, ARCAM AVR380, REL B2, Panasonic BD 80, LG OLED, SBox Transporter, iPad, F80. Shunyata Delta NR power cables.