Garage doors or armoured double doors#4123

Believe garage doors that require generators to function and maybe some heavy duty double doors and singles that can found via airdrops or events

upgradable double and single armored doors to pure metal would make more sense instead of the concrete. so once you upgrade to regular metal, it allows you to upgrade again to pure metal, or high quility metal. this may require high quility metal to be a new item in game.