# B
# Box loader
Box loaders are a common storage tech contraption that takes in items and "loads" them into a shulker box using hoppers or droppers. They can be used to compact items into smaller spaces and make handling items easier for both the player and storage systems.
#### Fundamental Mechanics:
It is useful (and often required) when designing loaders to know how filters work. Please see [this page](https://bedrockwiki.com/books/storage-tech/page/stackable-sorting "stackable sorting") for an in-depth explanation of item filters. Second, you need to know how shulker boxes are automatically placed and broken in the world. [This page](https://bedrockwiki.com/books/storage-tech/page/box-basics "box basics") explains that.
For a box loader to function, there are three components that need to interact with the box to be loaded.
1. A dispenser to place new empty boxes when one fills up,
2. A hopper/dropper to fill the box with items from the loader's input,
3. A piston to break the box once it fills up.
The image below shows a common layout for a single-hopper speed loader that includes all three of these components
[](https://bedrockwiki.com/uploads/images/gallery/2025-07/QWmimage.png)