Viking Freedom® Residential Pendent Sprinkler VK458 is a small, thermosensitive, glass-bulb residential sprinkler available in several different finishes and temperature ratings to meet varying design requirements.  The Electroless Nickel PTFE (ENT) coating has been investigated for installation in corrosive atmospheres and is UL Listed as corrosion resistant.  The sprinkler's larger 7.4 (107) K-factor is well-suited for NFPA 13 residential systems requiring a 0.1 gpm/ft2 design density.