This is a case that has front and back lids and the back lids have corner casters. It is approximately 21.25" w x 32" h x 10" inside the case (plus 2.5" deep lids). This can be foamed for a cab, can be made for a shock-mounted rack (with ¾" foam) which would make a little over 16U. Or can be part rack and head or head/cab, etc. Contact for pricing or customization or just purchase it as is if you want a good workbox that tilts and rolls. This would normally be about $524.99 or so if it was foamed with 1".