chest inventory slots

While these boxes have 27 inventory slots, they can also be stored within an ender chest, increasing the number of inventory slots to 729 (27 shulker box ...

There are a variety of ways to lock inventory slots in Terraria. The most common method is to use a chest, which can be crafted from wood or iron.

Each Minecraft barrel has 27 slots, like a normal chest or an Ender Chest.