There are several types of fire sprinkler heads that differ in design, installation, orifice size, temperature ratings, and response time. Pendant sprinklers have deflectors below and upright sprinklers have deflectors above. Sidewall sprinklers are installed horizontally on walls when ceiling installation is not feasible. Extended coverage sprinklers provide a larger spray area than standard sprinklers. Quick-response sprinklers discharge water earlier in a fire than standard sprinklers to help reduce property damage and increase safety.