Offering the benefits of a thumb-turn lock in one cylinder, and a keyed lock in the other. These locks are easy to use – the thumb-turn lock means you can lock your door internally without the use of a key.
You may consider using these on doors which require security from the outside, but a means of emergency escape from the inside i.e. apartment doors where fire regulations stipulate the doors need to be easily opened from the inside without a key.
Options- Keyed Alike or Keyed Random
