Can BlazeMaster pipe be run exposed in a shell office or building where the pipe is going to be exposed?

In order for BlazeMaster to be ran exposed it must follow the listing, which states it must be installed under a smooth, flat, horizontal ceiling with quick response sprinklers.  The deflector must be within 8 in. of the ceiling.   Please visit the manufacturers installation instructions for the detailed instructions: https://www.lubrizol.com/CPVC/Blazemaster/Product-Information/Manufacturing-Partners.html

As long as you  follow the listing and it’s being installed in a light hazard occupancy as defined by NFPA,  BlazeMaster is permitted to be run exposed.