• Brand: UNION
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  • KeyULTRA has a long patent providing peace of mind that cylinder keys cannot be copied
  • KeyULTRA benefits from DuraPIN patented key cutting, GuardPIN bump resistant technology, together with anti-drill and anti-pick features                


  • Key or turn operated to lock or unlock
  • Patented until 2028 (GB2453625 and GB2453624)
  • Suitable for fire doors
  • Bump resistant GuardPIN technology
  • Drill resistant
  • Plug extraction resistant
  • Chisel and twist resistant - when used with appropriate security escutcheon
  • Pick resistant:
  • Paracentric keyway
  • Mushroom drivers
  • Anti-pick notches in the differ pins
  • Wear resistance: Nickel silver differ pins
  • Extensive master keying capability - available key differs in excess of half a million
  • Supplied with 2 oversized solid nickel silver keys as standard
  • Extra keys available upon request
  • Manufactured in UK
  • Available in SC and PL finishes              


  • SC - Satin Chrome
  • PL - Polished Brass