Omnia 57251 Ornate Mortise Lev...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,068.14
Omnia Omnia 57251 Ornate Mortise Lever Lockset With Plates, 14" Overall, 3" W, 2-3/8" Projection OMN-57251

Omnia 57251 Ornate Mortise Lever Lockset with Plates, Solid Brass, 14" Overall Length

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Model: 57251/AD
From the Ornate Collection
$1,068.14
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,068.14
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Omnia 57251 Ornate Mortise Lever Lockset with Plates, Solid Brass, 14" Overall Length

The Omnia 57251 Ornate Mortise Lever Lockset delivers commercial-grade security with distinctive ornate styling for professional door hardware installations. This solid brass lockset features precise 14" overall length, 3" width, and 2-3/8" projection dimensions engineered for accurate mortise lock applications. The ornate design collection provides elegant architectural aesthetics while maintaining the durability required for demanding commercial environments, and the lever handle design supports ADA-compliant accessibility.

Key Features

  • Precise Dimensions: 14" overall length with 3" width and 2-3/8" projection for accurate mortise lock installation requirements.
  • Solid Brass Construction: Durable solid brass materials provide exceptional longevity and corrosion resistance for demanding commercial applications.
  • Ornate Design Collection: Distinctive ornate styling adds architectural elegance while maintaining professional functionality and security performance.
  • Commercial-Grade Performance: Engineered for commercial applications with mortise lock mechanism providing superior security and operational reliability.
  • Complete Lockset with Plates: Includes integrated plates for a comprehensive installation solution without requiring additional trim components.
  • Multiple Finish Options: Available in BAS, BPS, D, and ETR finishes to complement various architectural design requirements.
  • Lever Handle Operation: Professional lever handle design provides ergonomic operation and ADA-compliant accessibility for commercial facilities.

Technical Specifications

  • MAP Policy: Yes
  • Collection: Ornate
  • Commercial/Residential: Commercial
  • 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: Mortise

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Omnia 57251?

Omnia mortise locksets deliver professional-grade reliability with solid brass construction engineered for demanding commercial applications where dependable performance is essential. The ornate design collection combines architectural elegance with commercial durability, backed by precise 14" overall length, 3" width, and 2-3/8" projection dimensions for accurate installation, providing long-term value for professional door hardware installations across a variety of facility types.

Manufacturer Resources

Omnia 2026 Door Hardware Catalog

Product Specs

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

Omnia 57251/AD – Frequently Asked Questions

1) Do I have to specify handing when ordering the Omnia 57251 mortise lever lockset?
Handing is required. The 57251 is ordered left handed or right handed, and it is not field reversible, so the hand has to be right at the order stage. Stand outside the door: if the hinges are on your left, it's a left hand door. Get it wrong and the lever pitches the wrong way and the latch faces the wrong direction.
2) How much of the door face does the Omnia 57251 plate cover?
The escutcheon plate runs 14 inches overall by 3 inches wide, with a 2-3/8 inch projection off the face of the door. On a narrow stile you need at least 3 inches of flat stile face clear of the glass stop, and the 2-3/8 inch projection is what to check against a door that swings toward a wall or an adjacent trim piece.
3) What is the difference between the Passage, Panic-Proof and Single Dummy functions on the Omnia 57251?
Four functions are offered. Passage latches but never locks, for a corridor or closet door. Single Dummy is a surface-mounted trim with no latch at all, for the inactive leaf of a pair or a false door. Standard is the keyed entry function. Panic-Proof is the egress-oriented version, where turning the inside lever retracts the latch and releases the lock in one motion so a person can always get out without a key. For a classroom or stairwell, Panic-Proof is the one to look at.
4) Should I use the ornate Omnia 57251 or a heavy duty commercial mortise lockset for a school or healthcare corridor?
The 57251 is an ornate, solid brass decorative lockset. Where the opening is a high-abuse institutional corridor with a graded spec on the drawing, a purpose-built Grade 1 body is the right call: Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset, Corbin Russwin ML2003 is a Grade 1 classroom lock in the ML2000 series, and Falcon MA101 is a Grade 1 heavy duty passage mortise. Use the Omnia where appearance drives the specification, a lobby, a boardroom, a boutique hotel or a restored building.
5) Can I put the Omnia 57251 on a door that already has a cylindrical bore?
No. The 57251 is a mortise lock, meaning the body sits in a rectangular pocket routed into the edge of the door, not in a round 2-1/8 inch cross bore. A door prepped for a knob or lever cylindrical lock has to be re-prepped, or you use a cylindrical lock instead, such as the Schlage PC10 Grade 1 passage cylindrical lock. Going the other way, from an old mortise pocket to a new one, is straightforward as long as the backset and plate footprint line up.
6) What looks like a substitute for the Omnia 57251 but is not a complete mortise lever lockset?
Several mortise parts serve a different role. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the Sargent 130W is a mortise thumbturn with a round backplate in the 7800 Series, both trim pieces rather than locksets. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset in the 4870 Series, and the Kaba Ilco 185 Series is a no-handing mortise deadbolt sold in a single pack, neither of which carries a latch or lever. The BEST 45HCAC is a heavy duty 45H mortise lock body in public entrance function, supplied without trim. The Omnia 57251 is a complete solid brass lever set that includes its plates.
7) What is a comparable ornamental mortise entrance lock with a knob instead of a lever?
The Marks USA 21AC is an entrance double cylinder Unilock ornamental iron mortise lock with a round knob, and the Marks USA 22AC is the same ornamental iron entrance double cylinder mortise lock with round knob in the 22 Series. Both are built for 1 inch door thickness, so they suit narrow ornamental iron stiles. The Omnia 57251 is a lever mortise lockset in solid brass with plates, ordered in 2-1/2 inch or 2-3/4 inch backset and left or right hand. Choose the knob-by-knob Marks locks where the opening is ornamental iron and the thin stile drives the selection; choose the lever set where lever operation is wanted.
8) If a project spec calls for a Grade 1 storeroom mortise lock, what should be ordered instead of the Omnia 57251 ornate lever set?
For a stated Grade 1 storeroom requirement, the Accentra 8805FL is a Grade 1 storeroom mortise lock with the Arcadia lever in the 8800 Series, and the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. The Omnia 57251 is offered in Standard, Panic-Proof, Passage, and Single Dummy functions, so a storeroom function is not among its options. Specify the Accentra or Cal-Royal where the drawing calls out storeroom by grade and function.
9) For a healthcare or behavioral facility, what mortise lockset should be specified instead of an ornate brass lever set?
Anti-ligature trim is the deciding factor there. The TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function with satin stainless ligature resistant arch trim. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset in satin stainless steel, ligature resistant and ADA compliant. The Omnia 57251 is a solid brass lever set with ornate plates whose lever handle supports ADA-compliant operation, suited to commercial openings where a projecting lever is acceptable.
10) What mortise lock suits an aluminum storefront or glass door where the Omnia 57251 will not fit?
Narrow and glass door openings take purpose-built hardware. The Dormakaba E-Plex E2066 is an electronic pushbutton keyless mortise lock built for wide stile doors, the Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad made for Adams Rite deadlatches, and the Kaba Ilco BR Series is a glass door bottom rail lock. The Omnia 57251 is a solid brass ornate lever mortise lockset with 14 inch overall plates and a 3 inch width, dimensions intended for a full-size commercial door face.
11) What is a comparable option when the door needs to be electrically released from an access control system?
Three routes cover that. The Schlage L9092EU 03A is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC operation in corridor function for 1-3/4 inch doors. The BEST 45HW is a heavy duty wired electromechanical mortise lock with 12V/24V operation. The Command Access ML190 is a heavy-duty motorized mortise lock with field selectable EL/EU operation, 24VDC power, and storeroom function. The Omnia 57251 is a mechanical solid brass lever set and carries no electrical connection, so it fits openings controlled by key alone.
12) What finishes does the Omnia 57251 ornate mortise lockset come in?
Four finishes: Siena Brass, Venetian Nickel, Florentine Brass and Etruscan Bronze. All four are available across every function, so you can run Passage on the closets and the keyed Standard function on the entries and keep one finish through the whole floor. They are living finishes on solid brass, so they will mellow with handling rather than staying uniform like a plated chrome.
13) Does the Omnia 57251 need separate trim or rosettes ordered with it?
No extra trim. The 57251 ships as a complete lockset with the ornate escutcheon plates included, so the lever, plate and mortise body come together. You still supply the strike prep in the frame and, on the keyed Standard function, a mortise cylinder to suit your keying.
14) Can I get the Omnia 57251 with a keypad or card reader for access control?
The 57251 is mechanical only, keyed and lever operated. For credential-based access on a mortise prep, look at the TownSteel FME-2000 Grade 1 RFID mortise lockset, the Schlage CO-100 standalone electronic mortise lock with keypad reader, the Dormakaba E-Plex 2066 pushbutton keyless mortise lock, or the Alarm Lock DL3500CR Trilogy Grade 1 classroom lock with 300 user codes. These use the same mortise pocket, so the door prep carries over.
15) Can I standardize a whole building on the Omnia 57251 across different door functions?
Yes, and that's the practical reason to pick it. All four functions, Standard keyed, Panic-Proof, Passage and Single Dummy, share the same ornate 14 inch plate and lever, so the entry doors, corridor doors and dummy leaves all read identically down a hallway while doing different jobs. Order the same finish across all of them and only the function code changes. Backset and handing are still specified per opening.
16) What decorative mortise lockset is comparable if a dummy set is all that is needed on an inactive leaf?
Emtek offers dummy mortise entrance locksets across several decorative patterns: the 3019 Brisbane in brass, the 3102 Memphis, the 3104 Hamilton, and the 3106 Manhattan, all with a Dummy product function. The Schlage L0170 is a Grade 1 L Series half dummy trim for 1-3/4 inch doors in heavy duty. The Omnia 57251 also lists a Single Dummy function in Siena Brass, Venetian Nickel, Florentine Brass, and Etruscan Bronze, so the choice among these is the trim pattern and finish family rather than the operation.
17) What is a simpler alternative if only a passage mortise lock is needed and the ornate brass plates are not required?
The Hager 3810S is a 3800 Series passage mortise lock with a rose and 2-3/4 inch backset for 1-3/4 inch to 2-1/2 inch doors, and the Hager 3810E is the same passage lock supplied with an escutcheon. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating. The Omnia 57251 does include a Passage function, but it comes as a solid brass ornate set with plates; the Hager, Schlage, and Falcon passage locks are plain trim options.
18) What is a comparable office or entrance mortise lockset for a commercial suite door?
The Cal-Royal NM8050 is a heavy duty Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Hager 3850E is a 3800 Series Grade 1 office mortise lock with lever and escutcheon, non-keyed, with a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch. The Omnia 57251 covers office and suite doors through its Standard function in solid brass with ornate plates, ordered in a 2-1/2 inch or 2-3/4 inch backset. The Hager and Cal-Royal sets carry a stated Grade 1 rating for specifications that call one out.
19) What should be used on a dormitory or corridor door that needs an integral deadbolt?
The Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. Where the deadbolt is to be operated by keypad, the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and privacy keypad for doors 1-5/8 inch to 1-7/8 inch. The Omnia 57251 is a lever lockset in Standard, Panic-Proof, Passage, and Single Dummy functions, so a deadbolt-integrated corridor set is a different part.
20) Will the Omnia 57251 hold up on an exterior door or in a coastal building?
Solid brass throughout, which is why it holds up outdoors, brass doesn't rust and it takes salt air far better than plated steel trim. The finishes are living finishes, so an exterior installation will patina over time rather than staying as shipped. If a uniform unchanging appearance matters more than the ornate look, a stainless steel lockset like the TownSteel MRX-L-01 is the different direction to take.
How fast can I get the Omnia 57251/AD 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 57251/AD come with a warranty?
Absolutely. The Omnia 57251/AD 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 57251/AD?
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