Simply build a quick box and add the armor walls to surround yourself.
As you might expect, the armor walls are near impenetrable and can be the saving grace you need during a hectic firefight or when you need to use that medkit or chug potion. Simply build a quick box and add the armor walls to surround yourself. Even if other opponents want to break in, it will take them a good twenty or thirty seconds given the wall's high HP. Plus, you can find these armor wall items all over the place, from chests and floor loot alike.