The supplemental drawer attaches under a cart’s primary drawer to provide additional secure storage space. Double version provides two separate medium drawers.This drawer works in conjunction with the cart’s electronic auto-locking drawer system. A separately ordered Drawer Travel-Stop accessory is recommended if cart is configured with three, four or five drawer rows.- Works in conjunction with auto-locking drawer system- Individual drawers are easily removed for stocking and cleaning- Configure the interior of each drawer to suit your needs using the provided dividers