The FZER6HW from Odyssey is a 6U Pro Trolley Effects Rack with Wheels.

The Flight Zone® Series Effects Racks are sturdy ATA cases that accommodate all shallow depth standard 19” rack mountable equipment and accessories. Each features front and rear rack rails, heavy-duty steel ball corners, spring-loaded handles, and removable front and rear covers. The "HW" Rolling Rack versions feature low profile, super-strong recessed rollers, and a pullout handle for superior convenience. These racks are built to last under rigorous transporting.