The Barton ALC6440/RD/2 has attached lids & these containers can be stacked when the lid is closed, or nested to save space when the containers are not in use & the lid is open. They allow for “locking” by way of cable ties or similar when high value goods are stored & include a card holder for ease of identification. This two pack is completed with a high impact polypropylene & a virgin grade polypropylene lid for ensured durability.