Omnia D25430A 430 Knob and 250...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$574.00
$430.50
Omnia D25430A 430 Knob and 25000 Plate Single Cylinder Mortise Lockset Omnia D25430A

Omnia D25430A 430 Knob and 25000 Plate Single Cylinder Mortise Lockset with 3-5/8" Center-to-Center Spacing

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Model: D25430A00.34.1
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$574.00
$430.50
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Omnia D25430A 430 Knob and 25000 Plate Single Cylinder Mortise Lockset with 3-5/8" Center-to-Center Spacing

The Omnia D25430A 430 Knob and 25000 Plate Single Cylinder Mortise Lockset combines classic residential design with reliable mortise-lock security. This sideplate lockset features 3-5/8" center-to-center spacing and single cylinder operation, allowing key access from the exterior while maintaining convenient thumb-turn operation from the interior. The heavy-duty mortise mechanism provides superior strength and durability compared to standard bored locks, making it well suited for high-quality residential installations.

Key Features

  • 3-5/8" Center-to-Center Spacing: Standard residential spacing ensures compatibility with most door preparations and existing installations.
  • Mortise Lock Construction: Heavy-duty mortise mechanism provides superior security and longevity compared to standard cylindrical locks.
  • Single Cylinder Operation: Key operation from the exterior with thumb turn interior operation for convenient daily use and emergency egress.
  • 430 Knob Design: Classic knob style provides comfortable operation and timeless aesthetic appeal for residential applications.
  • 25000 Plate Configuration: Coordinated sideplate design ensures proper fit and professional appearance with the 430 knob.
  • Residential Grade Quality: Engineered specifically for residential applications with appropriate durability and finish quality.

Technical Specifications

  • MAP Policy: Yes

Typical Applications

  • High-End Residential Homes
  • Custom Home Construction
  • Residential Renovation Projects
  • Luxury Apartment and Condominium Units
  • Historic Home Restoration
  • Designer Home Applications
  • Premium Residential Security Upgrades

Why Omnia D25430A?

Omnia mortise locksets deliver residential-grade reliability with heavy-duty mortise construction designed for demanding home security applications. The combination of classic 430 knob styling, coordinated 25000 plate design, and robust mechanical operation ensures dependable performance for years of residential use. Engineered for discerning homeowners who value both security and aesthetic appeal in their door hardware selections.

Manufacturer Resources

Omnia 2026 Door Hardware Catalog

Product Specs

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

Omnia D25430A00.34.1 – Frequently Asked Questions

1) What backset does the Omnia D25430A mortise lockset come in?
Two backsets are offered on the D25430A: 2-3/8 inch and 2-1/4... use 2-3/4 inch. The two choices are 2-3/8 inch and 2-3/4 inch, which are the two standard residential backsets. Measure from the door edge to the center of the existing knob bore and pick the one that matches, since the backset has to line up with the mortise pocket already cut in the door.
2) Will the Omnia D25430A fit my existing door prep?
The D25430A uses 3-5/8 inch center-to-center spacing between the knob and the cylinder, which is the common residential sideplate spacing, so it lines up with most existing preps of that pattern. Confirm two things on the door: that your knob-to-cylinder centers measure 3-5/8 inches, and that your backset is either 2-3/8 or 2-3/4 inches so you order the matching version.
3) Is the Omnia D25430A keyed on both sides or does it have a thumb turn inside?
Single cylinder. Key from the outside, thumb turn on the inside. That keeps egress simple, which is what most homeowners and code officials want on an entry door, but it also means someone can reach the turn if there is glass next to the door. If that is a concern on a glass-front entry, a double cylinder setup is the alternative, and it is a different product.
4) What is the difference between an Omnia sideplate mortise lockset like the D25430A and a tubular entry set such as the Emtek 5302?
The D25430A is a mortise lockset: the lock body sits in a pocket routed into the edge of the door, and the 25000 sideplate carries both the 430 knob and the cylinder on a single backplate. The Emtek 5302 Modern Rectangular is a tubular single point lockset, which bores through the face of the door instead of taking a mortise pocket. If your door is already mortised, stay with the Omnia. If it is bored for a standard tubular lock, the Emtek 5302 family is the easier retrofit and comes with round knobs (5302 ROU) or levers such as the Hanover and Helios.
5) What is the closest alternative to the Omnia D25430A if the door is prepped for a tubular lock instead of a mortise pocket?
The Omnia D25430A is a single cylinder mortise lockset, so it needs a mortise pocket routed into the door edge. If the door has a standard bored/tubular prep instead, the Emtek 5302 Modern Rectangular Single Point Lockset is a brass tubular key-in-knob/lever unit that works with a bored prep rather than a mortise pocket. Both give you keyed exterior entry with a decorative plate behind the knob or lever, but the door preparation is the deciding factor - a tubular lock will not fill a mortise pocket, and a mortise case will not drop into a bored door without new machining.
6) Is the Omnia D25430A rated for commercial or multi-family entrance doors?
Residential. Omnia builds the D25430A for homes, custom construction, renovation work, historic restoration, and high-end apartment or condo units. For a commercial opening with heavy daily traffic, you want a commercial-grade mortise lock rather than this one.
7) Why choose a mortise lockset over a cylindrical lock for a front entry door?
A mortise lock body sits inside a pocket cut into the door edge, so the mechanism is larger and carries more of the load than a cylindrical lock pressed into a bored hole. Omnia calls that out as the reason the D25430A holds up better over time on a main entry. The tradeoff is prep: mortising a door is more work than boring it, so on a door that is not already mortised, a tubular entry set is the faster install.
8) I want a lever instead of a knob on the Omnia D25430A style plate - what else should I look at?
The D25430A pairs the 430 knob with the 25000 sideplate. If the opening calls for a lever, Emtek offers single point locksets in lever trim: the 5302 with the Hanover lever and the 5302/5308 with the Helios lever, both entry function with single cylinder keying. Those are tubular single point locksets, so confirm your door prep before swapping - the Omnia unit uses a mortise case and the Emtek levers are bored/tubular.
9) For a modern or contemporary door, is the Omnia D25430A the right look or is there a cleaner option?
The Omnia D25430A is a classic knob-and-sideplate design intended for traditional and historic residential work. For a contemporary opening, the Emtek Modern Rectangular series - the 5302 with round knobs or with the Hanover lever - gives a rectangular plate profile in the same single cylinder entry function. Note the construction difference: the Omnia set is mortise and the Emtek Modern Rectangular units are brass tubular.
10) Backset is 2-3/8 inch on my door - does the Omnia D25430A cover that, or do I need a different brand?
No need to switch. The Omnia D25430A is built in both 2-3/8 inch and 2-3/4 inch backsets in polished brass, so it covers the two standard residential backsets directly. Order to match the existing bore center rather than substituting to an Emtek 5302 tubular set, which would also change the door prep from mortise to bored.
11) What finish is the Omnia D25430A 430 knob lockset available in?
Polished brass, in both the 2-3/8 inch and 2-3/4 inch backset versions. If you are matching other openings in the same house, the polished brass 430 knob and 25000 plate combination is what you would specify across the set to keep the entry hardware consistent.
12) Does the Omnia D25430A come as a matched set with the knob and plate together?
Yes. The 430 knob and the 25000 sideplate are sold as a coordinated pair, so the escutcheon proportions and the knob styling are made to go together rather than being mixed from separate lines. You pick backset and finish; the knob and plate pairing is fixed.
How fast can I get the Omnia D25430A00.34.1 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 D25430A00.34.1 come with a warranty?
Absolutely. The Omnia D25430A00.34.1 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 D25430A00.34.1?
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
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