Pendant Sprinkler Heads are designed for ceiling mounting. 68 degrees Celsius – Red, 79 degrees celsius – Yellow, 93 degrees celsius – Green. Available in Standard Response and Quick Response. Thread Size: 1/2″ NPT Available in Brass or Chrome SRI Upright Sprinkler Head SRI Sprinkler Alarm Valve 150mm SRI Sprinkler Alarm Valve 100mm