The Viking Microfast® EC/QREC Fusible Element Horizontal Sidewall Sprinkler VK609 is a small thermosensitive solder link spray sprinkler available with various finishes and temperature ratings to meet design requirements. The VK609 has both standard response and quick response listings. The fusible operating element and special deflector characteristics meet the challenges of quick response extended coverage standards. The special Polyester and ENT coatings can be used in decorative applications where colors are desired. The Electroless Nickel PTFE (ENT) coating has been investigated for installation in corrosive environments and is listed and approved as indicated in the Approval Chart(s).