There are many different types of doors that are available on the market, but not quite compare to steel doors to the extent that safety and security is concerned. Many one-way doors are input hollow cast aluminum. This is a solid door, but certainly not as strong and robust steel doors.

Installation of Steel doors will definitely be a work of two men. The doors are heavy so you'll need someone to lift the door, while the hinges are screwed in place, other than that it is typical door installation.