• 7 brass levers provide maximum security.
  • All the components are made of sheet metal for maximum strength
  • Scratch-resistant powder-coated body and reinforced receptacle.
  • A safety catch provides added security and prevents the lock from being opened even by its own key.
  • Can be replaced by Ultra Latch/ Tri-bolt / Latch-bolt with the help of Ultra Retrofit Adaptor without altering the holes on the door.
  • Automatic dead-locking which prevents the latch-notch being forced open from outside.
  • Profiled Latch Bolt to increase strength & smooth action.


Security : Level 1


Product Code

Product Type Back set (mm) Door Thickness (mm) Door Type Color
7666 1CK 69 25 to 60 Wooden

Brushed Steel

1CK = Operable by key from outside and knob from inside

Backset = The horizontal distance from the nearest door edge to the centre of the keyhole.



Locking Feature

Product code Product type Locking mechanism Safety catch Deadlocking internal Deadlocking external
7666 1CK Latch bolt Knob Auto,Knob


Security Feature

Product code

Warranty Corrosion Resistance Master key control

Customer Segment

Entrance doors, Wood and steel doors

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