• Functions at 55 decibels, 16x decibel reduction compared to standard Grade 1 mortise locks.
  • UL Listed 3 Hour (R134846).
  • Grade 1 certified to ANSI/BHMA A156.13.2005.
  • Insulated lock body features noise muffling for lower decibel reduction.
  • Cushioned Latch bolt: softens noise common to latch firing into strike.
  • For door with stiles 4" and greater.