Horizontal Mortice Bathroom Lock - For Use With Door Knobs - 127mm or 152mm Deep Case - PVD Brass

Catalogue Number:
Full Description
Product Name Price Qty
20180.1 - Horizontal Mortice Bathroom Lock - PVD Brass - 127mm Case Depth - (101mm Backset)
£30.94 £25.78

Per Each
20180.2 - Horizontal Mortice Bathroom Lock - PVD Brass - 152mm Case Depth - (127mm Backset)
£30.94 £25.78

Per Each
  • Horizontal mortice bathroom lock with 5mm spindle for use with bathroom turn & release systems.
  • Supplied with PVD brass forend and strike plates.
  • Large style lock case available in two sizes - 127mm (5 inches) or 152mm (6 inches) deep.
  • Traditional horizontal style is ideal for mortice knobs as it places the knobs far away from the door frame.
  • Horizontal locks were a traditional lock often found in period properties.
  • Spindle hole for the turn & release is located to the side of door knobs rather than underneath.
  • Thumbturn operated dead bolt.
  • Bolt through lock (38mm bolt holes) to suit bolt together handles and mortice knobs.


  • Latch is withdrawn via a mortice door knob or lever handle from either side of the door (handles sold separately).
  • Two way action allows un-sprung door knobs to be turned either way to withdraw the latch mechanism and open the door.
  • Deadbolt is locked and un-locked via a bathroom thumbturn and release lock (sold separately).


  • Light weight springing makes this lock ideal for use with door knobs.
  • Two way action allows door knobs to be turned in both directions.
  • Solid brass guided latch.
  • Solid brass deadbolt with anti-saw rollers.
  • Bolt through facility for bolt together fixing lever handles and accessories at 38mm centres.
  • 8mm x 8mm spindle follower (to suit standard UK size spindles).
  • Latch can be reversed on site without taking the lock case apart.
  • Reversible frame mounted strike plate.


Security Level 

  • Low security architectural range.
  • Suitable for use on internal doors in residential or light commercial buildings.


  • PVD brass.


Alternative Finishes Available

  • Polished stainless steel.
  • Satin stainless steel.


Diagram and dimensions of Union horizontal mortice bathroom lock

Available in two sizes

  • 20180.1 - 127mm (5 inch)
  • 20180.2 - 152mm (6 inch)
Dimension On Diagram
Overall Case Depth
Backset (Distance To centre Of Spindle Hole)
Backset (Distance To centre Of Key Hole)
Case Height
Forend - Height x Width
120mm x 25mm
120mm x 25mm

Options Available To Order

  • Intumescent sheets and lock case liners are available. Please see our intumescent fire rated products category for details.

Rebate Kit For Double Rebated Doors

  • 40832.1 - 13mm PVD brass rebate kit for use with the horizontal mortice locks.

Unit Of Sale

  • Each - (1 x lock case supplied with forend, strike plate).
More Information
Item 20180
Item Code 20180
Finish PVD Brass
Dimensions 127mm or 152mm Deep Case
Sold Per Each
Availability Stock item - please allow 1-3 days for delivery
Stock item - please allow 1-3 days for delivery
Download PDF Data Sheet
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