Omnia 11055 Traditional Mortis...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$759.56
Omnia Omnia 11055 Traditional Mortise Lever Lockset With Plates, 10 5/8" Overall, 2 3/8" W, 2 1/2" Projection OMN-11055

Omnia 11055 Traditional Mortise Lever Lockset with Plates, Solid Brass, 10-5/8" Overall Length

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Model: 12043/A3
From the Traditional Collection
$759.56
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$759.56
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Omnia 11055 Traditional Mortise Lever Lockset with Plates, Solid Brass, 10-5/8" Overall Length

The Omnia 11055 Traditional Mortise Lever Lockset combines classic design with solid brass construction for lasting durability and elegant appearance. This residential-grade lockset features a 10-5/8" overall length, 2-3/8" width, and 2-1/2" projection, making it suitable for standard residential door applications. The solid brass construction ensures long-term reliability and corrosion resistance, while the traditional styling from the Traditional Collection complements period architecture and timeless interior designs. A complete mortise lock configuration with lever handle operation delivers superior security and smooth, ADA-compliant accessibility.

Key Features

  • Precise Dimensions: 10-5/8" overall length with 2-3/8" width and 2-1/2" projection for standard residential door compatibility.
  • Solid Brass Construction: Premium solid brass materials provide exceptional durability and natural corrosion resistance for long-lasting performance.
  • Traditional Design: Classic styling from the Traditional Collection complements period architecture and timeless interior designs.
  • Mortise Lock Configuration: Professional mortise lock mechanism provides superior security and smooth operation compared to standard bored locks.
  • Lever Handle Operation: Ergonomic lever design offers easy operation and ADA-compliant accessibility for all users.
  • Multiple Finish Options: Available in US3, US26, SB, and MS finishes to match various architectural hardware schemes.
  • Complete Plate Assembly: Includes mounting plates for professional installation and finished appearance.

Technical Specifications

  • MAP Policy: Yes
  • Collection: Traditional
  • Commercial/Residential: Residential
  • Department: Door Hardware
  • Handle Type: Lever
  • Lock Type: Mortise
  • Product Category: Mechanical Locks
  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • Product Type: Mortise Locks
  • Subcategory: Deadbolts

Typical Applications

  • Residential Entry Doors
  • Interior Room Access
  • Traditional Home Renovations
  • Period Architecture Restorations
  • Custom Home Construction
  • Historic Property Maintenance
  • High-End Residential Projects

Why Omnia 11055?

Omnia Traditional Mortise Lever Locksets deliver residential-grade reliability with solid brass construction engineered for smooth operation and lasting durability. The precision 10-5/8" overall dimensions, 2-3/8" width, and 2-1/2" projection combine with traditional styling to make this lockset ideal for discerning homeowners who value both security and classic design aesthetics.

Omnia 11055 solid brass mortise lever lockset, 10-5/8" overall length, 2-3/8" width, 2-1/2" projection. Traditional styling with ADA-compliant lever operation.

Manufacturer Resources

Omnia 2026 Door Hardware Catalog

Product Specs

Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Mortise Locks
Subcategory:
Deadbolts
Commercial/Residential:
Residential
Lock Type:
Mortise
Handle Type:
Lever
MAP Policy:
Yes
Product Category:
Mechanical Locks
Collection:
Traditional
Department:
Door Hardware

Omnia 12043/A3 – Frequently Asked Questions

1) What do I have to specify when ordering the Omnia 11055 mortise lever lockset?
Four things decide the part you get. Function: Standard, Double Cylinder, Storeroom, Panic-Proof, Classroom, Privacy, Passage, Single Dummy, or Pair Dummy. Finish: Polished Brass, Polished Chrome Plated, or Shaded Bronze. Handing: left or right. Backset: 2-1/2 inch or 2-3/4 inch. Handing and backset are both required selections, so measure from the door edge to the center of the lever before you order.
2) Is the Omnia 11055 handed, and can I flip it in the field?
Handing is a required choice at order time, left or right. Pick it from the outside of the door: standing outside, if the hinges are on your left it is left handed. There is no field-reversible option offered here, so get the hand right the first time.
3) Will the Omnia 11055 fit my mortise pocket, and how much will it stick out from the door face?
The 11055 lockset with plates measures 10-5/8 inches overall by 2-3/8 inches wide, with a 2-1/2 inch projection. The plate footprint is what has to cover the existing mortise prep and any old screw holes, and the 2-1/2 inch projection is what to check against door stops, adjacent trim, or a door that swings back against a wall.
4) Can I use the Omnia 11055 on a commercial office or school door?
No. The 11055 is a residential-grade lockset. Even though it is offered in Classroom and Storeroom functions, it is not the part for a commercial opening under a hardware schedule. For that, look at Grade 1 mortise locks like the Corbin Russwin ML2003 classroom lock, the Cal-Royal NM8080 storeroom lockset, or the Hager 3800 Series, all listed as Grade 1.
5) The Omnia 11055 is residential grade - what should I use instead on a commercial opening that needs a Grade 1 mortise lock?
The Omnia 11055 is a residential mortise lever lockset. For a commercial opening calling out Grade 1, look at the Corbin Russwin ML2003 Grade 1 mortise classroom lockset for 1-3/4 inch doors, the Cal-Royal NM8080 Grade 1 storeroom mortise lockset with interchangeable core option, or the Accentra 8805FL Grade 1 storeroom mortise lock with Arcadia lever from the 8800 Series. Falcon MA101 covers passage in Grade 1 heavy duty with a fire rating and field reversible operation.
6) Can I use the Omnia 11055 classroom function on a school corridor door, or do I need something else?
The Omnia 11055 is a residential lockset and its classroom function is intended for residential-style openings. An institutional classroom door is better served by a Grade 1 classroom mortise lockset: the Cal-Royal NM8070 heavy duty Grade 1 classroom mortise lockset for 1-3/4 inch doors, the Corbin Russwin ML2003 Grade 1 classroom lockset, or the Marks USA LA318GJ classroom security indicator mortise lockset with ANSI strike and steel escutcheon for 1-3/4 inch doors. TownSteel FME-4000 adds an electronic intruder classroom function with RFID.
7) Is the Omnia 11055 interchangeable with a cylindrical lock like the Schlage PC10?
No. The Omnia 11055 is a mortise lockset and needs a mortise pocket cut into the door edge. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors, which uses a bored cross-hole prep instead. If the door already has a mortise pocket and only passage function is needed, the Schlage PM010 Grade 1 non-keyed passage latch is the mortise equivalent of the PC10.
8) What should I use instead of the Omnia 11055 on a narrow stile aluminum storefront door?
The Omnia 11055 is a residential mortise lever lockset with plates sized for standard residential doors at 10-5/8 inch overall. Aluminum storefront openings are a different prep: Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad built for Adams Rite deadlatches, Kaba Ilco BR Series is a glass door bottom rail lock, and Marks USA 21AC and 22AC are ornamental iron mortise locks listing a 1 inch door thickness.
9) What is the difference between the Standard and Double Cylinder functions on the Omnia 11055 entry lockset?
Double Cylinder means a key is required on both sides of the door, inside and out. That is the usual pick for a door with glass beside it or in it, where someone could reach through and turn a thumbturn. Standard is the plain keyed entry arrangement. Both are offered in all three finishes, Polished Brass, Polished Chrome Plated and Shaded Bronze.
10) I need a dummy lever to match the working locks on my other doors. Does Omnia make one in this style?
Yes. The 11055 is offered in both Single Dummy and Pair Dummy, in all three finishes, so a closet or a non-latching half of a French pair matches the keyed and passage doors exactly. Single Dummy is one side only, Pair Dummy gives you both. If you want a different look in a dummy, Emtek's mortise dummy locksets cover Brisbane, Memphis, Hamilton and Manhattan styles.
11) Which Omnia 11055 function do I order for a bedroom or bathroom door?
Privacy is the one you want: it locks from the inside without a key, which is what a bed or bath door needs. For a hall, closet or pantry door that only needs to latch, order Passage. Both are available in Polished Brass, Polished Chrome Plated and Shaded Bronze, so you can run the whole floor in one look.
12) Why choose a mortise lockset like the Omnia 11055 over a standard bored lock?
A mortise lock body sits in a pocket cut into the door edge rather than a round bore, which gives a bigger mechanism, heavier feel, and lets one body carry both a latch and a deadbolt. It is the traditional arrangement for older and period doors, which is why the Traditional Collection styling on the 11055 suits restorations and custom homes. The tradeoff is prep: a bored lock needs two holes, a mortise lock needs a routed pocket, so retrofitting a bored door to mortise is real carpentry.
13) I only need a non-operating decorative mortise lever set - is there a simpler option than the Omnia 11055?
The Omnia 11055 is offered in single dummy and pair dummy functions alongside its keyed and privacy functions, so it can be ordered as a dummy directly. If a different decorative look is wanted, Emtek offers dummy mortise entrance locksets in several trim patterns - the 3019 Brisbane in brass, the 3102 Memphis, the 3104 Hamilton, and the 3106 Manhattan. For a plain commercial dummy trim, Schlage L0170 is a Grade 1 mortise non-keyed half dummy lever for 1-3/4 inch doors.
14) What is the difference between the Omnia 11055 and a mortise deadbolt like the Sargent 4874?
They are different devices. The Omnia 11055 is a complete mortise lever lockset with plates - lever trim plus the lock case, available in functions including standard, storeroom, classroom, privacy, passage and double cylinder. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset with no lever or latch, so it provides the bolt only and is paired with separate trim or a passage set. Kaba Ilco 185 Series is likewise a deadbolt-function mortise lock, supplied with no handing.
15) I need keyless entry on the door - what takes the place of the Omnia 11055?
The Omnia 11055 is a mechanical keyed mortise lockset with no electronic credential. For keypad or credential entry in a mortise prep, Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes in classroom function for 1-5/8 to 1-7/8 inch doors, Dormakaba E-Plex 2066 is an electronic pushbutton keyless mortise lock, and Accentra NTM623-NR is a Grade 1 nexTouch mortise lock with a capacitive touchscreen keypad and cylinder override. Schlage CO-100 offers a Grade 1 standalone keypad mortise lock in privacy function for 1-3/4 inch doors.
16) My door is thicker than standard - will the Omnia 11055 or a Hager 3800 series suit better?
The Omnia 11055 is a residential mortise lever lockset ordered with a 2-1/2 inch or 2-3/4 inch backset and left or right handing. Hager's 3800 Series is the deep-door option among the peers: the 3810E passage mortise lock with escutcheon and the 3850E office mortise lock with lever and escutcheon both list a door thickness range of 1-3/4 inch to 2-1/2 inch on a 2-3/4 inch backset, and the 3840S privacy covers 1-3/4 inch to 2 inch. Baldwin's 6301 lever mortise body lists 1-3/4 inch and over.
17) For a bathroom or bedroom door, is the Omnia 11055 privacy function enough or should I spec a heavy duty privacy mortise lock?
The Omnia 11055 is offered in a privacy function and is a residential solid brass lever set, which suits homes and high-end residential work. For higher traffic bed/bath openings, Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and Hager 3840S is a 3800 Series privacy mortise lock on a 2-3/4 inch backset for 1-3/4 inch to 2 inch doors.
18) Is there an alternative to the Omnia 11055 for a behavioral health or ligature resistant opening?
The Omnia 11055 uses a traditional projecting lever and is a residential decorative set. Ligature resistant openings call for purpose-built trim: TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, MRX-A-01 is the same passage function with satin stainless arch trim, and Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel.
19) Can I buy just a mortise lock body instead of the complete Omnia 11055 set?
The Omnia 11055 is supplied as a complete lever lockset with mounting plates. If existing trim is being kept and only the case is being replaced, the BEST 45H Series is a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCA Series is a heavy duty mortise lockbody with intruder function. Baldwin 6310 is a knob by knob entrance/storeroom mortise lock body on a 2-1/2 inch backset for doors 1-3/8 inch and over.
20) What finishes does the Omnia 11055 come in, and will it hold up on an exterior entry door?
Three finishes: Polished Brass, Polished Chrome Plated, and Shaded Bronze. The lockset is solid brass, which does not rust and takes weather better than plated pot metal. Polished Brass will patina outdoors unless it is lacquered and kept out of the sun; Shaded Bronze is the more forgiving choice on a weather-exposed entry.
21) Is the lever on the Omnia 11055 easier to operate than a knob for accessibility?
It is a lever, not a knob, so it can be operated with a closed fist or a forearm, no grasping or twisting. That is the operation ADA guidance calls for and it is the practical reason to spec levers in a home where someone has limited hand strength. All 27 finish and function combinations of the 11055 are lever handles.
How fast can I get the Omnia 12043/A3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Omnia 12043/A3 come with a warranty?
Absolutely. The Omnia 12043/A3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Omnia 12043/A3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Omnia 12043/A3 from ZenSupply?
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