Viking® VK331, Model M, 4.2K, Standard, Pendent, QR, 1/2" NPT, Black, 175 Degree 21271MD/B Fire Sprinkler Head Tyco Fire Sprinkler Head Wrench 4950 Wrench & Socket Combo Foam gasket: 0

Foam gasket: 0

5213212899

49-316-4-160

They come with 3/16" diameter attaching holes that are pre drilled for easy installation

Item:  Access Control Housing

Viking® VK331, Model M, 4.2K, Standard, Pendent, QR, 1/2" NPT, Black, 175 Degree 21271MD/B Fire Sprinkler Head Tyco Fire Sprinkler Head Wrench 4950 Wrench & Socket Combo Foam gasket: 0Viking VK331, Model M, 4. 2K, Standard, Pendent, QR, 1 2" NPT, Black, 175 Degree 21271MD B Fire Sprinkler Head The Viking Microfast Quick Response Pendent Sprinkler VK331 is a small thermosensitive glass bulb spray sprinkler available with various finishes and temperature ratings to meet design requirements. The special Polyester and Electroless Nickel PTFE (ENT) coatings can be used in decorative applications where colors are desired. In addition,