Viking® VK535, Microfast Model M, 11.2K, Extended Coverage, Fusible Link, Upright, QR, 3/4" NPT, White, 280 Degree 14139MG/W Fire Sprinkler Head 21878C 21489UME/W18 Fire Sprinkler Head

21489UME/W18 Fire Sprinkler Head

57-591-4-135

No glass to shatter

Deionized Water Extinguishing Agent Sold Separately

Maximum Humidity:  ​10 to 93% non-condensing​

Viking® VK535, Microfast Model M, 11.2K, Extended Coverage, Fusible Link, Upright, QR, 3/4" NPT, White, 280 Degree 14139MG/W Fire Sprinkler Head 21878C 21489UME/W18 Fire Sprinkler HeadViking VK535, Microfast Model M, 11. 2K, Extended Coverage, Fusible Link, Upright, QR, 3 4" NPT, White, 280 Degree 14139MG W Fire Sprinkler Head The VK535 is a thermosensitive spray sprinkler available in several different finishes and temperature ratings to meet varying design requirements. The extra large orifice produces the flows required to meet Ordinary Hazard density requirements at lower pressures than standard orifice or large orifice