Help and Advice

The most important part of installing a lock is ensuring that it will fit.
The first measurement is the ‘stile’ of the door.
The size of the stile is the horizontal distance from the edge of the door to the edge of any paneling or glass your door might have.
If your door’s surface is completely flat, without any panels, glass or embedded decoration, then you don’t need to measure this.
If your door does have panels, glass or embedded decoration, then you need to measure the distance between the edge of the door and the beginning of your feature.
Obviously the stile measurement varies between door designs, but it’s usually around 90mm to 125mm.

You don’t need to worry whether your door is left- or right-handed. The majority of locks are reversible.

The stile will decide which size of lock you can use.
Determine how deep your lock can be without interfering with any of the door features.

Once you have determined this, look at which backset will best suit your door. This determines the location of your handle/knob from the edge of the door. The smaller the backset, the closer to the edge the handle is located.

Now consider how wide the backplate of your lever handle set is or the diameter of the rose your lever is on, and make sure the position of the handle set on the door is acceptable. Check particularly that the backplate or rose will not interfere with any panelling, door frames or, if the doors are double and rebated, that the handle plates don’t cover any of the rebate.

Fitting Door Handles

1. The first step is to insert the square spindle through the latch/sashlock. If the spindle is slotted, then you must ensure the slot is facing the direction necessary for the grub screw to hold.
2. Slide the handle backplate/rose onto the spindle and fix it to your door with the screws provided.
3. Now slide the opposite handle or knob firmly onto the spindle. Make sure that you fix it in position with the provided grub screw.
4. In order to fit an escutcheon to the keyhole, you must align the backing plate with the slot in the lock case and once again fix with the screws provided.
5. Now push or screw on the escutcheon cover.


Door knobs are very similar to regular handles in terms of fitting. However, there is one important consideration. Knobs require a larger backset on the lock/latch to accomodate your hand/knuckles when turning the knob. A suitable backset would be in the range of 75-85mm though much larger backsets of up to 150mm are not un-heard of. Rim knobs are also an option. Instead of using a mortice lock, these use a special lock fitted to the surface of the door.

Bathroom Locks

Bathroom locks are primarily for privacy. There are however a few things which are required when you’re buying new furniture for a bathroom door, and they’re often overlooked.The most important requirement when you’re buying a bathroom lock is that you look closely at what you’re buying. If you’re buying a handle lever on rose, you will ALSO need to buy a separate thumb turn and release.These also require a special bathroom lock to facilitate the 5mm spindle that most turn and release mechanisms use.Many levers on plate are also available in a bathroom option.

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