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Polished brass mortise lock knob, right-hand, screwless design

Marks USA

Marks Metro 114D/3 Polished Brass Right Hand Mortise Lock Knob

SKU CH-TDBC-33T4A

Polished brass mortise lockset with office vestibule and classroom functions, latch and rocker operation, right-hand handing, and solid brass construction

  • FinishPolished Brass
  • TypeMortise Lockset
  • KeyingKeyed Different
  • Office vestibule function keeps doors secure or open as needed
  • Classroom function allows outside key control with free inside egress
  • Latch and rocker design operates without a deadbolt for simpler operation
  • Solid brass plates and cylinder resist wear and corrosion
  • Right-hand configuration fits doors hinged on the right side

Marks Metro 114D/3 Mortise Lockset

This mortise lockset is built for commercial doors that need office vestibule or classroom functions. It suits facility managers and installers who require a right-hand unit with a latch-and-rocker mechanism and no deadbolt. The polished brass finish matches traditional hardware while the solid brass plates and cylinder provide durability in high-traffic areas.

Installation notes and common issues

The through-bolted plate assemblies allow screwless knob fitting with a self-adjusting spindle, which speeds up mounting on standard door prep. Installers must verify the 2-1/2 inch backset and the 1-1/16 by 7-5/8 inch face plate dimensions before cutting. A frequent error is ordering the wrong handing; this unit is right hand only and cannot be reversed in the field.

Right-hand classroom function with no deadbolt

The lock operates as an office vestibule or classroom set: the outside cylinder controls the latch while the inside has no thumb turn, keeping the lever always free for egress. Buyers who need a deadbolt, a left-hand configuration, or an inside thumb turn should select a different model. The package includes a solid brass cylinder with two keys keyed different.

Highlights

  • Office vestibule function keeps doors secure or open as needed
  • Classroom function allows outside key control with free inside egress
  • Latch and rocker design operates without a deadbolt for simpler operation
  • Solid brass plates and cylinder resist wear and corrosion
  • Right-hand configuration fits doors hinged on the right side

Specifications

FinishPolished Brass
TypeMortise Lockset
KeyingKeyed Different

Questions about this item

How can I confirm the lock operates correctly after installation?

Turn the outside key to retract the latch and rocker; the knob should rotate freely without a bolt. Inside, the lever retracts the same latch and rocker with no thumb-turn present, confirming the Office Vestibule and Classroom functions.

What components are included with the lockset?

Solid brass front plate measuring 1-1/16" x 7-5/8", screwless knobs with self-adjusting spindle, through-bolted plate assemblies, solid brass cylinder, and two keys.

Which handing should I select for a door hinged on the right?

Choose the Right Hand version (114D/3) to match a right-hinged door; the cylinder sits on the outside and the inside has no thumb turn.

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