1.2M square foot warehouse design! Each ESFR sprinkler puts out approximately 200 GPM. 14 sprinklers are projected to operate in a single fire event! 2800 GPM is an insane amount of water in 60 seconds. Operating psi is at 60 minimum with all sprinklers flowing. 170 psi if only one goes off. 8700 ESFR sprinklers total and an additional 1300+ located in other hazards. This is what I do for a living. May not be the brightest but I know my career in life safety