Industrial Door
From Starbounder - Starbound Wiki
A tough automated door, reinforced to be able to survive intense intergalactic conditions.
An Industrial Door is a door object found in industrial merchant ships and space encounters. It can be purchased from industrial ship merchants, or scanned and printed via the Pixel Printer. While a recipe exists for this object in the game assets, that recipe is not a default recipe nor is it taught by anything currently in the game.