We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Gotham

Gotham 9900LAK Polished Brass Left Hand Mortise Entry Lockset

SKU CH-9AEA-1WNFY

Heavy-duty mortise entry lockset with through-bolted brass plates, screwless knobs and a self-adjusting spindle, supplied with two keys

  • FinishPolished Brass
  • Selling UnitBox
  • TypeMortise Entry Thru Bolted Lock Set
  • FeaturesThrough Bolted plate assemblies - Screwless Knobs with Self
  • Security LevelHeavy Duty
  • Location TypeCommercial/Residential
  • Heavy-duty security from solid brass construction
  • Left-hand mortise design fits specific door orientation
  • Through-bolted knob plates strengthen the assembly
  • Screwless knobs with self-adjusting spindle ease installation
  • Solid brass cylinder includes two keys

Left-Hand Mortise Entry Lockset

The Gotham 9900LAK is a heavy-duty mortise lockset finished in polished brass. It is designed for left-hand doors in commercial or residential entrances. Solid brass plates and a solid brass cylinder provide durable construction. Two keys are included for the keyed-different cylinder.

Through-Bolted Screwless Knob Assembly

Knob plates are through-bolted for a secure mechanical bond that resists loosening over time. Screwless knobs use self-adjusting spindles to maintain alignment without visible fasteners. The 2-1/2 inch backset suits standard mortise preparations. A 1 inch deadbolt throw and a 1-1/16 by 7-5/8 inch front face plate complete the hardware.

Commercial-Grade Brass Cylinder

The solid brass cylinder handles daily traffic on main entry doors and includes two cut keys. Keyed-different supply means each set operates independently unless rekeyed by a locksmith. Left-hand orientation limits installation to doors hinged on the left when viewed from outside. Buyers needing right-hand operation or multi-point locking must select a different model.

Highlights

  • Heavy-duty security from solid brass construction
  • Left-hand mortise design fits specific door orientation
  • Through-bolted knob plates strengthen the assembly
  • Screwless knobs with self-adjusting spindle ease installation
  • Solid brass cylinder includes two keys

Specifications

FinishPolished Brass
Selling UnitBox
TypeMortise Entry Thru Bolted Lock Set
FeaturesThrough Bolted plate assemblies - Screwless Knobs with Self adjusting Spindle
Security LevelHeavy Duty
Location TypeCommercial/Residential
MaterialBrass
Backset2-1/2"
KeyingKeyed Different
StyleKnobs
SeriesMarks 114A/3 Like
FunctionEntrance

Questions about this item

Should I pick the 2-1/2 inch backset or a different size for my door?

This lockset is built with a 2-1/2 inch backset; choose it when your door prep matches that measurement.

How does the 1 inch deadbolt perform once installed?

The 1 inch throw deadbolt extends fully into the strike for strong resistance against forced entry.

What does the Marks 114A/3 style through-bolted design mean for installation?

Through-bolted plates clamp both sides of the door so the knobs stay rigid without exposed screws.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.