... . Brass Body, Chrome Plating 3. 1/2" , 3/4" with 68, 79, 93 degree centigrade 4. upright, pendent Side wall fire ... sprinkler , side wall fire sprinkler of fire apparatusModel: ZSTB-20-68/79/93Installation: horizontal or vertical against to wallConnection thread: 3 ... /4 inchDiameter: 20 mmFlow rate: 115 L/minResponse temperature: 68, 79, 93 Celsius temperature are available