In Unturned 3.0 and later, there are a few kinds of doors. They are used to gain or block access to rooms. Only the owner or someone in the owner’s user group can open metal doors. You’ll need two metal sheets and one piece of metal scrap to create metal doors in the crafting menu. Crafting doors don’t require any crafting ability. Metal doors can be replaced by jail or vault doors if you have the corresponding resources. Wooden doors are not as effective at blocking intruders, as anyone can open them.