Odyssey FZER4HW - 4U Pro Trolley Effects Rack with WheelsFlight 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