Middle Atlantic Heavy Duty Caster Kit for Laminate RacksThe Middle Atlantic RKW HD is a purpose built caster kit designed to enhance the mobility and versatility of laminate racks. Engineered to integrate seamlessly with standard laminate rack frames, this four caster set makes it easy to move equipment between rooms, studios, or control centers while preserving stability when you need to work. With two locking casters for secure positioning and a robust 150 lb weight capacity, the RKW HD is a practical