The UPS unit’s shape, orientation, and installation method are referred to as its form factors. The bulk of UPS systems are either mounted or in a tower format.

A mounted UPS system can be attached to a wall or server rack. They are primarily single phase, however, there are also three phase rack-mount UPS units available. A rack-mounted UPS is perfect for businesses that need to conserve space by consolidating equipment in a rack or enclosure or by utilising unused wall space.