QT Jarbox, A Sturdy Plastic Container That Holds 12 QT Jars, Provides Safe Storage, Allows For No Jar On Jar Contact, Keeps Jars Clean, Full Or Empty, Allows For Easy Transportability, Designed With Locator Rings On Top & Bottom Of Jarbox To Allow Boxes To Lock On Top Of Each Other When Stacking, Dishwasher Safe, Made Of BPA Free Materials.