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Lockmaster Latch 3 Deadbolts Lift Lever or Double Spindle Multipoint Door Lock - Option 1 (top deadbolt to spindle = 718mm)

Lockmaster Latch 3 Deadbolts Lift Lever or Double Spindle Multipoint Door Lock - Option 1 (top deadbolt to spindle = 718mm)
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This Lockmaster Standard multipoint door lock features 3 Deadbolts & 1 Latch.

The Lockmaster range of locks is vast, with a large number of different variants of the same lock, but with locking points in different positions. We stock the most popular versions which can be adapted to suit an existing requirement if the alteration is small, or we can source the exact product required.

Lockmaster locks are fairly easy to identify once they have been removed from the door, even if the logo isn't stamped on the faceplate. Upwards throwing locks (often accompanied by an anti lift pin) and one of the largest gearboxes, at 228mm are good giveaways.

Lockmaster door locks are the UK best selling multipoint door lock. Acquired in the early 2010's by Yale, they now form part of a range of locks which includes the Yale, Millenco, Millenco Mantis and Lockmaster brands. You may also find these locks have been rebranded by other companies, with Milamaster being commonly specified.

Please note that some older versions of Lockmaster locks may have locking point locations in slightly different places. That may require the routing prep on the door to be enlarged by 40-50mm to accommodate the revised locations and for the keeps to be repositioned.

Lockmaster gearboxes are available in 35mm or 45mm backsets with either a, double spindle or single spindle mechanism. Bifold door versions of the gearbox are available in 25mm and 28mm backsets.

Double spindle locks feature 62mm and 92mm centres and are unsprung, so we recommend the use of sprung door handles. They can be used as lift lever or double spindle nightlatch function. Single spindles are sprung and can only be used as a lift lever function.

Lockmaster gearboxes measure 228mm high by backset +15mm. The latch measures 30mm high, as does the deadbolt. There is 65mm between the bottom of the latch and the top of the deadbolt.

Gearboxes are fitted to faceplates with 3 screw holes. The top to middle screw hole measures 109mm and the middle to bottom also measures 109mm.

Earlier versions of these gearboxes also had a small spindle hole at the top of the case, near to the latch. This was used to hold the latch back.

45mm versions of the Lockmaster gearbox are the same as the 35mm version but feature an extended latch and deadbolt and a cover plate to convert the lock to 45mm backset.

Deadbolts feature a chamfered edge and the cases measure 154mm high.

Operation: Double Spindle

To lock the door

1. On closing the door, the latch is automatically engaged.

2. Lift the handle up to engage the locking points.

3. Lock the system by turning the key.

To unlock the door

1. Unlock the system by turning the key.

2. Push the handle downwards to disengage the locking points.

3. A further quarter turn of the key will retract the latch.

  • Corrosion tested to BS EN 1670:2007 Grade 4 (240hrs. NSST)

We stock a range of associated products for Lockmaster Standard multipoint door locks, including keeps, spindles, handles and accessories.

You may find this lock used as an UPVC door lock, an aluminium door lock, a timber multipoint door lock or a composite door lock .

How can I tell who the manufacturer is of my multipoint lock?

Check down the faceplate and look for a brand name or logo to identify the manufacturer.


How do I find out the operation of my multipoint door lock?

  • 1. If you only use the key to unlock all of the locking points then the operation is called Key Wind.
  • 2. If you lift the handle and turn the key to lock then the operation is called Lift Lever.
  • 3. If from the outside you unlock with the key, pull handle down to disengage the locking points and turn the key to open the door then this operation is called Nightlatch or Split Spindle.
  • 4. If lifting the handle fully locks the door without the use of a key then this operation is called Auto Locking.


How do I measure my multipoint door lock?

Always measure in millimetres.

  • 1. Backset – Measure the distance from the edge of the faceplate back to where the key goes into the door cylinder.
  • 2. Centres – Measure the distance from centre of handle spindle down to where the key goes into the door cylinder.
  • 3. Locking points – Measure the distance from centre of the locking point to the centre of handle spindle then repeat for other locking points.
  • 4. Faceplate – Measure the distance across the width of the face and full length of the faceplate.
  • 5. Gearbox – Measure the height and depth of the gearbox.


How do I know if my multipoint door lock is left or right handed?

99% of multipoint door locks are field reversible, instructions for which are under product information. For those models which are handed please refer to the handing chart to determine which hand you require.


Do you have a gearbox for this multipoint lock?

Yes our part numbers are LMCASE35, LMCASE351S, LMCASE45 and LMCASE451S.

All product options

All product options
Product Code Backset Spindle Faceplate Operation StockRRPDiscountPriceQuantity
LM545
45mm
Double 8mm
Flat 16mm - Square Ends
Double Spindle
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LM545S
45mm
Single 8mm
Flat 16mm - Square Ends
Lift Lever
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MM3DB35
35mm
Double 8mm
Flat 16mm - Square Ends
Double Spindle
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MM3DB35S
35mm
Single 8mm
Flat 16mm - Square Ends
Lift Lever
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