Rubbermaid Customizable and Configurable 3′ to 6′ Closet Kit for $59.50. Select in-store pickup at Walmart to save on shipping by using the free site-to-store service. Here is a screenshot for your reference. This configurations closet systems are fully expandable, customizable and configurable to fit closet from 3′ to 6′. Most places have this kit for over $75.