- 102mm (4 inches) deep case makes this look ideal for use with mortice door knobs.
- Privacy lock for use on bathroom doors, toilets and WC doors.
- For use on doors that require door handles and need to be locked via a thumb-turn and release system.
- Must be used in conjunction with some form of door handle.
- Comes supplied with a polished brass forend and frame mounted strike plate.
Operation
- Latch is withdrawn via a lever handle from either side of the door (handles sold separately).
- Deadbolt can be locked and un-locked via a bathroom thumb-turn and release system (sold separately).
- This lock can be released from the outside in case of an emergency when used in conjunction with a turn and release.
- Only a quarter turn is required on the thumb-turn to lock and un-lock the dead bolt.
FeaturesÂ
- Solid brass deadbolt and latch.
- Medium weight spring strength ideal for use with sprung lever furniture.
- Bolt through facility for bolt together fixing lever handles and accessories at 38mm centres.
- 8mm x 8mm spindle follower (to suit standard UK size door handles).
- 5mm x 5mm thumb-turn spindle follower (to suit standard UK size turn and release systems).
- Reversible strike plate.
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Security LevelÂ
- Medium security.
- Suitable for use on internal doors in residential properties.
- Privacy lock.
Finish
- Polished brass – (shiny finish ideal for matching with polished brass products).
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Alternative Finishes Available
- Satin chrome.
Dimensions
- Available in one size only
- 102mm case depth (83mm backset).

| Item Code | Lock Case Depth (A) | Backset To Keyhole (B) |
|---|---|---|
| 20178.1 | 102mm | 83mm |
- Lever handle follower – 8mm x 8mm.
- Dead bolt follower – 5mm x 5mm.
Rebate Kit For Double Rebated Doors
- 40830.1Â – 13mm polished brass rebate kit for use with mortice lock.
Unit Of Sale
- Each – (1 x lock case supplied with forend, strike plate).










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