Viking® VK611, Microfast Model M, 5.6K, Extended Coverage, Fusible Link, High Pressure, Pendent, QR, 1/2" NPT, White, 165 Degree 13972MC/W Fire Sprinkler Head 75 feet If your FDC measures 3

If your FDC measures 3 5/8" across

Model V-SD

51-800-1-155

49-825-7-135

Viking® VK611, Microfast Model M, 5.6K, Extended Coverage, Fusible Link, High Pressure, Pendent, QR, 1/2" NPT, White, 165 Degree 13972MC/W Fire Sprinkler Head 75 feet If your FDC measures 3Viking VK611, Microfast Model M, 5. 6K, Extended Coverage, Fusible Link, High Pressure, Pendent, QR, 1 2" NPT, White, 165 Degree 13972MC W Fire Sprinkler Head Viking QREC Fusible Element Pendent High Pressure Sprinkler VK611 K5. 6 is a thermosensitive solder link spray sprinkler with a chrome finish and a 165F temperature rating. The fusible operating element and special deflector characteristics meet the challenges of quick response extended coverage