The exact dimensions of Vessel without modules installed is 22.25 x 10.5 x 3.375 inches. When sizing transportation cases allow for up to 1 inch additional clearance for control knobs and other panel mounted components on LZX Industries modules.
For robust transportation and storage, we love this hard ATA case with roller wheels and carry handle from Gator. It fits the Vessel case perfectly, with just enough room to transport patch cables, user reference cards, and your power supply DC brick as well. Works best with an extra 12 x 24 inch foam pad to cover the frontpanels of your modules before closing.
Gator 12 x 24 Inches ATA Mixer Case (G-MIX 12X24) $99 USD