Upright Sprinkler

   Upright fire sprinklers are suited for areas that are difficult to access, like around beams, ducts, and other ceiling obstructions, or in ceilings without a finish (eg., no drop ceiling or drywall).   

These sprinklers are commonly found in buildings with exposed ceilings, like many chic restaurants or mechanical rooms. It may be useful to think of an upright fire sprinkler like an upside down pendent fire sprinkler, only with a concave deflector.