Lockwood Symmetry Single Cylinder & Turn Knob

Single Cylinder Deadlock ability to lock or unlock the door from the inside of the house with a thumb-turn provides a level of ease to which the modern homeowner has grown used.

Single Cylinder Deadlock Function - on the outside, there is a keyed cylinder, while on the inside, the door is locked and unlocked with a thumb turn. In the event of an emergency, the inside thumb turn provides for a quick departure.


  • General purpose single cylinder deadbolt
  • Operated by key from outside and turn knob inside
  • Suits left or right-hand opening doors
  • Hardened insert in locking bolt


  • The one-cylinder assembly solution “OneCyl” has been designed for the Lockwood Symmetry Range, which grants the convenience of cylinder interchangeability
  • 5-pin Lockwood C4 brass cylinder assembly (6-pin compatible)


  • Door Thickness: 30mm - 46mm (spacer ring included)
  • Residential: Yes
  • Adjustable Backset: Yes
  • Compatible with Restricted Keying: Yes
  • Body / Case Material: Zinc
  • Number of Cylinders: 1
  • Bolt / Latch Projection: 25mm
  • Fixing Type: Visible
  • Rose Design: Round
  • Kinetic Defence: Yes
  • Backset: 60-70mm
  • Bolt Holdback: Yes
  • Handing: Suits left or right hand opening doors
  • Keying: Operated by key from outside and turn knob inside
  • Finish: Polished Stainless Steel



Barcode # 9311847780545
Brand Lockwood