NFPA 13, Table 18.104.22.168.2 (Suspended or Floor-Mounted Obstruction in Light Hazard Occupancies Only (SSU/SSP)) shows vertical and horizontal constraints for light hazard occupancies. I have a new 16' high demising wall being built in the middle of a large store (ordinary hazard group 1), dividing the store in half. The wall has short wing walls that are perpendicular to the new demising wall. Sprinkler heads are provided in each 'bay' area and the distances between heads are spaced correctly. Should these wing walls be considered as walls? And if so, is there a wing wall height where they wouldn't be considered walls?