Locking Bars
Weather resistant, heavy duty locking bars are popular for external application and are available in vertical or horizontal styles. Like hasps & staples, a locking bar consists of a hinged slotted metal plate (known as a hasp) that is fastened over a metal loop (known as a staple) with a padlock.
For applications that require the ultimate in security, make sure you purchase a locking bar that can take a concealed padlock.