What is a Nightlatch? A nightlatch is fitted on the internal side of a door and will help give the door more sturdiness when in a locked position.60mm is commonly used for conventional doors, whereas those using glass panel doors will often choose a 40mm back set.
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What does 60mm backset mean?
‘Backset’ is the distance from the front of the lock to the centre of the spindle as shown here.Almost ALL domestic mortice locks and tubular latches are supplied with either a 44mm or 57mm backset length. These equate to case sizes of 2.1/2″ or 3″ in imperial measurements. Commercial (DIN) lockcases are 60mm backset.
Are night latches a standard size?
Night latches are available to purchase in two sizes, which are 40mm backset and a 60mm backset.
How do you measure a night latch?
The size of a Night Latch is measured from the centre of the keyhole to the edge of the door where the night latch should finish.
How is a Rimlock measured?
Rim locks or more commonly known as Rim Night Latches or even more common Yale Locks. The critical measurement is the back set. This is the measurement from the leading edge of the door to the centre of the key hole.
What size backset do I need?
The backset size on a lock or latch case is the distance from the edge of the door to the centre of where the handle spindle passes through the door (or the key / turn where applicable), this is dimension ‘X’ below. For example, a 2 1/2 inch or 64mm latch has a backset size of 44mm and a total depth of 64mm.
How do I measure my backset?
Backset: A backset is the distance from the center of the cross bore, to the edge of the door. To determine the correct backset measurement for your door, you need to measure the distance from the edge of the door to the center of your cross bore.
What is the backset on a lock?
The backset is the distance from the edge of the door to the spindle mechanism on the latch. Usually for a 63mm case measurement it will have a 44mm backset and for a 76mm case measurement will have a 65mm backset.
What is an auto deadlocking Nightlatch?
Auto deadlocking Night Latches are deadlocked automatically when the door is closed. The anti-thrust bolt is triggered as the door closes, deadlocking the door and ensuring the latch bolt cannot be slipped by a plastic card, ensuring a high level of security.
What height should a night latch be?
Establish a convenient height for the latch. Typically, a night latch mounts on the door 48 inches from the floor. Mark the desired height at the lock side of the door with a pencil.
What is a 5 point Mortice lock?
Five lever mortice deadlock
The five lever mortice deadlock is a type of door lock commonly fitted to wooden doors.It works by inserting and turning the key to move the five levers into the correct position, allowing the bolt to be locked or unlocked.
What is backset size on a lock?
The backset is the horizontal distance from the edge of a door to the centre of a lockset; thus, the distance a lockset is ‘set back’ from the edge of a door is called its backset. It’s usually 1 inches or 2 inches (or 44mm and 57mm).
What size is a Euro cylinder?
Euro Cylinders Can Vary in Length
Single or half Euro Cylinder locks typically range from 40mm to 50mm, whilst Euro Cylinders range from 60mm up to 120mm as standard, equal lengths from the central cam. For example, an 80mm length standard Euro Profile Cylinder lock will measure 40mm either side of the operating cam.
Are Mortice locks a standard size?
There are two sizes of mortice locks: 21/2 and 3. If you are installing a mortice lock to a door with a narrow frame, or any door for that matter, it’s very important to know what size lock you need. The size of the mortice lock refers to how far the keyhole will be from the edge of the door.
What is the standard backset for door knobs?
2 3/8 inches
In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches.
What does LOB mean on door handles?
LEVER ON BACKPLATE
LEVER LOCK: Backplate has a key hole, for use with a sash type lock which contains a lock and a bolt.
How do I know what size Mortice latch I need?
An easy way to choose which latch you need is to measure from the edge of your door to the centre of your door Stile. Choose the Backset which is closest to this measurement, and the handle will be as central as possible to the Stile on your door.
How do you choose a backset?
The backset is the measurement from the edge of the door to the center of the bore hole. Most door handle sets feature a 2-3/8″ or 2-3/4″ backset. To determine the backset on your door, measure the distance from the outer edge of the door, to the center, or highest point of the bore hole.
What is the typical backset for residential exterior doors?
Backset: Measure from the edge to the center of the drilled knob area; 2.375-inches (2 3/8-inches) is the modern standard.
How do you measure a backset hinge?
Hinge Backset
The distance from the edge of the applied hinge leaf to the frame stop. This is a critical measurement and must be accurate within 1/32??. The most common dimension is 5/16??. The hinge backset on the door will be properly adjusted from this measurement (typical 1/16??) to ensure proper clearance.
What is a night latch used for?
The night latch holds the door closed with a latch which can often be deadlocked into position. The latch’s screw prevents the cam on the mortise cylinder from turning far enough to allow the key to be released from the core (or plug) while the handle is locked.
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