Steel General Purpose containers provide a very economical and effective deterrent to potential problems of theft and vandalism.

They are generally fabricated from between 1.5 to 2mm corrugated mild or Corten steel panels over a heavy gauge mild steel frame. Normally freight containers have a set of double "barn" doors on the end and each door has two locking bars. These locking bars have cams on both ends which fit into retainers on the upper and lower rails.

The right door effectively locks the left and padlocks can be fitted to Customs Catches on both.

Containers can be made more secure by fitting a padlock housing (or "cowl") to the doors. This optional feature is designed to enclose a security lock and restricts access by bolt croppers or hacksaw.