When choosing door handles for your home there are many options to consider including shape, size, style and finish. In addition to this, you must also consider the type of application and suitable lock/latch mechanism needed. This process can be quite overwhelming, therefore to make this process as easy as possible we have created a simple guide to determine which lock/latch you require with your chosen handle. The type of lock needed will differ on either a wood or aluminum door. Available in Satin Nickle, Solid Brass or Black.
What Lock / Latch Do I Need?
| Location of door: | Choice of Lockset: |
| Standard doors | 2 to 5 lever key lock choice OR Sash lock with choice of cylinder |
| Double doors | Sash lock with choice of cylinder AND Rebate kit |
| Sliding doors | Hook lock with choice of cylinder |
| Bathroom doors | Dead lock with privacy cylinder |
Types of Cylinders:
Double: both sides of the door will have entry key access.
Knob/key: where keyed entry is one side, and the other side has a simply knob to turn.
Knob/knob: both sides of the door will simply need to turn a knob to lock/unlock the door. No need for a key.
Privacy: basic knob on inside of toilet/bathroom, with a coin slot on the outside – able to open in an emergency
Half cylinder 43mm: only one side of the door, will have a key OR knob access and the cylinder does not protrude through both sides of door.
Cylinders available in different lengths – from 43mm half and next range between 60mm and 120mm
Available Keying Configurations:
Key Differed: all locks working using a different key
Keyed Alike: all locks work using the same key
Master Keyed: locking system used throughout a building whereby one key can access multiple locks.
Types of Locks:
Standard door locks are either Key lever locks OR Cylinder locks. Other types of locks could be cremone bolts, barrel bolts or yale latches. All depending on your own personal needs.
**For Cylinder locks – the measurement between the center of the spindle, to the center of the top section of the cylinder is needed from the lock being used, as this will affect where the cut for the cylinder is made on the backplate. Measurement “E”
Lever locks are supplied in a number of variants – 2 lever, 3 lever, 4 lever and even 5 lever. All these lever locks range from low to high security.
A 2 lever lock offers key differs between 18 and 20. This means that lock manufacturers make 20 different keys before they can start the process to duplicate the same 20 keys. Less key differs increase the risk of possible key duplicates that may be nearby – think of a townhouse complex with 100 homes, if the builders used 2 lever locks on the front door, every fifth house would use the same key! Also, the fewer the levers, the lower the security as the lock might be easier to pick.
A 2 lever lock will be most suitable for your internal doors such as bathroom and bedroom doors, where high security is not a priority. A 5 lever lock will offer about 500 key differs, which decreases the probability of a duplicate key being nearby. 5 lever locks are good for your external doors such as front doors and gates. The 5 Lever Mortice Lock from Yale offers 500 key differs and features an anti-saw deadbolt with hardened roller pins. This lock is SABS approved and is good for your external doors.
https://www.specifile.co.za/assa-abloy-lock-security-levels/news/security-fire-protection-access-control/
