MR-720 is a 20U heavy duty professional flight case constructed from 7 layers of multiplex plywood approximately 10mm. All models are equipped with butterfly type locks, fold down recessed handles and four heavy duty castors (Two with Brakes). All cases have chromium-plated ball corners, reinforced aluminium profile edges for maximum protection and are supplied with rack screws. These cases are ideally suited for the construction of multiple amp racks and effects racks. Used by professional event and high companies.