In Minecraft, a 2x2 piston door is a type of door that is opened and closed by two pistons. This type of door is useful for keeping mobs and players out of your home or base.

Piston doors are a very popular entrance idea among Minecraft players. Not only do these doors appear fancy, but they're also quite easy to hide and convert into secret entrances.

In Minecraft, players have often strived to make the largest Piston doors possible, and Honey Blocks are the key thing making it happen.