Does anyone know what this is for? It seems like a waste to me.

Most importantly, they transform wasted space into practical storage.
Installation Tips

Before purchasing a pull-out drawer:

Measure the available gap carefully.
Choose heavy-duty drawer slides for durability.
Confirm the drawer will fully clear nearby appliances or handles.
Follow manufacturer instructions closely during installation.

If you’re uncomfortable with cabinet modifications, a professional installer can complete the job quickly.
Are Pull-Out Filler Drawers Worth It?

Absolutely.

Although they may seem like a minor feature, narrow pull-out drawers often become one of the most useful storage areas in the kitchen.

They improve accessibility,