RFII EC Concealed Pendent QR K=80 1/2" - RFII Extended Coverage Sprinkler - Extended Coverage Sprinklers - Fire Sprinklers & Nozzles - Products | JCI Webshop
The Differences Between Pendent & Concealed Sprinkler Heads
Amazon.com: TUNA UL & CUL Listed 1/2"NPT Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate : Patio, Lawn
TYCO Concealed Window Sprinkler | Johnson Controls