Accentra 4790LN Augusta Grade ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$925.00
$716.21
Accentra 4790LN Augusta Grade 1 Fail Safe Electrified Cylindrical Lever Lock

Accentra 4790LN Augusta Grade 1 Fail Safe Electrified Cylindrical Lever Lock

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Model: YAL-AU-4790LN-626
From the 4700 Series Collection
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$925.00
$716.21
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Accentra 4790LN Augusta Grade 1 Fail Safe Electrified Cylindrical Lever Lock

Professional Grade 1 Cylindrical Lock Solution

The Accentra 4790LN Augusta cylindrical lever lock delivers ANSI/BHMA Grade 1 certified performance with fail safe electrified operation for demanding commercial applications. This heavy-duty lock features adjustable door thickness from 1-3/8" to 1-3/4", 2-3/4" standard backset, and 1/2" stainless steel latchbolt throw. UL-cUL fire-rated up to 3 hours with windstorm certification, this lock combines reliable mechanical construction with electrified functionality for comprehensive access control.

Professional Features & Benefits

  • ANSI/BHMA: A156.2, Series 4000 Grade 1
  • UL-cUL: UL-cUL fire-rated up to 3 hours
  • Windstorm: 4700LN Certified (refer to local codes)
  • Mechanism: Heavy-gauge steel, die-cast, zinc-plated, chromated
  • Backset: 2-3/4" standard
  • Latchbolt: 1/2" stainless steel throw standard
  • Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
  • Door Thickness: 4700LN adjustable from 1-3/8" to 1-3/4". 4700 adjustable from 1-3/4" to 2"
  • Fronts: 2-1/4" x 1-1/8" beveled standard; flat fronts available to order
  • Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin not available.
  • Reversibility: Non-handed
  • Strikes: ANSI strike 4-7/8" x 1-1/4" x 1-1/4" lip to center supplied standard. Optional T-strike available to order for 4700LN.
  • Finishes: 4700LN available in 7 finishes, 4700 available in satin stainless steel (630) only.
  • Warranty: 5-year mechanical

Installation & Operation

  1. Verify electrical requirements match available power supply and confirm fail safe operation configuration before proceeding with installation.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Use manufacturer-provided templates to mark mounting hole locations accurately on door. Prepare door by drilling required 2-1/8" bore hole and routing for 2-1/4" x 1-1/8" beveled front.
  4. Route and connect electrified wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the fail safe application.
  5. Install lock mechanism ensuring proper alignment with door thickness adjustment from 1-3/8" to 1-3/4" and secure all mounting hardware per manufacturer torque specifications.
  6. Configure fail safe operational settings and test all functions including normal operation, electrified release, and emergency egress capability.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

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

Why Choose Accentra Quality?

Accentra cylindrical lever locks deliver professional-grade reliability with heavy-gauge steel construction and ANSI/BHMA Grade 1 certification for demanding commercial applications. UL-cUL fire-rated up to 3 hours with 5-year mechanical warranty coverage provides comprehensive protection and peace of mind. Engineered for consistent quality and ease of installation where dependable electrified access control performance is essential.

Product Specs

Series:
4700 Series
Subcategory:
Cylindrical
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Cylindrical
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Model:
YAL-4790LN
Collection:
4700 Series
Lever Design Name:
Augusta Lever
Product Category:
Mechanical Locks
Department:
Door Hardware

Accentra YAL-AU-4790LN-626 – Frequently Asked Questions

1) Will the Accentra 4790LN fit a 1-3/4 inch commercial door?
Yes. The 4790LN Augusta lever lock is a 4700LN chassis, adjustable from 1-3/8 to 1-3/4 inches, so a standard 1-3/4 inch commercial door and an older 1-3/8 inch interior door both work off the same lock. If your doors run thicker, 1-3/4 to 2 inches, that is the plain 4700 chassis instead, and the 4700 only comes in satin stainless steel 630.
2) What door prep does the 4790LN electrified lever lock need?
A 2-1/8 inch bore with routing for the 2-1/4 x 1-1/8 inch beveled front, on a 2-3/4 inch backset. Flat fronts can be ordered if your existing prep is square-edged. You also need a wire path to the chassis, since this is an electrified lock, not a strictly mechanical one.
3) What does fail safe mean on the 4790LN, and when would I want fail secure instead?
Fail safe means the lock unlocks when power drops. That is what you want on an egress or stair-side opening where people have to get out, or where a fire alarm needs to release the door. If the opening has to stay locked during a power loss, a storeroom door, an IT closet, a drug room, then fail safe is the wrong choice and you want a fail secure electrified lock instead.
4) Is the 4790LN approved for fire-rated door assemblies?
The 4790LN carries UL-cUL fire ratings up to 3 hours, and the 4700LN is also windstorm certified (verify against your local code). It is ANSI/BHMA A156.2 Series 4000 Grade 1, which is the heavy commercial duty level for schools, hospitals and high-traffic offices.
5) Will the 4790LN latch into the strike already in my frame?
The latchbolt is a 1/2 inch stainless steel throw and the lock ships with an ANSI strike, 4-7/8 x 1-1/4 inches with a 1-1/4 inch lip to center. If your frame is already prepped for a standard ANSI 4-7/8 strike, it drops in. An optional T-strike is available to order for the 4700LN if your frame has T-strike prep instead. The guardbolt deadlocks the latch once the door closes.
6) What is the closest equivalent to the Accentra 4790LN Augusta electrified cylindrical lever lock from another manufacturer?
The closest match is the Corbin Russwin CL33903, a Grade 1 fail safe electrified cylindrical lever lock offered in a 12VAC/DC version. Both are Grade 1 electrified cylindrical levers with fail safe operation. The main difference to check before ordering is door thickness: the Accentra 4790LN is adjustable from 1-3/8 inch to 1-3/4 inch, while the Corbin Russwin CL33903 is listed for 1-3/4 inch to 2 inch doors. On a thinner commercial door the Accentra fits the opening; on a thicker door the Corbin Russwin range is the one that covers it.
7) Do I have to order the 4790LN handed?
No. The Augusta lever lock is non-handed and reversible, so one lock covers left and right hand openings. That makes it easier to stock as a spare across a building.
8) How does the 4790LN come keyed, and can I get 7-pin?
It ships with a brass 6-pin keyed-random cylinder and two keys. 7-pin is not available on this lock, so if your facility is standardized on a 7-pin system, this chassis will not accept it.
9) Can I standardize the 4790LN across a building where other openings use mechanical 4700LN levers?
Yes, and that is the usual reason to pick it. The 4790LN uses the same 4700LN chassis platform, 2-3/4 inch backset, 2-1/8 inch bore, ANSI strike and Augusta lever trim, so electrified openings look and prep the same as the mechanical ones next to them. Finish matching is straightforward too, since the 4700LN range runs seven finishes plus the suede powder coats.
10) If the opening does not need access control wiring, what mechanical Grade 1 cylindrical lever can I use in place of the Accentra 4790LN?
The 4790LN is an electrified lock, so it needs a power supply and wiring run to the door. For an opening that only needs mechanical operation, Grade 1 cylindrical lever options include the Dexter C1000 classroom lever, which is keyed with a clutching lever and fits 1-3/8 inch to 1-3/4 inch doors, and the Dexter C1000 Grade 1 passage lever for a non-keyed door. The Falcon K101 is another Grade 1 heavy duty passage cylindrical lock, fire rated, with a 1-3/8 inch to 2-1/4 inch thickness range.
11) Can I substitute a Grade 2 lever like the Hager 2580 or Cal-Royal AG05 for the Accentra 4790LN?
Only if the specification allows a lower grade and the opening does not need electrified control. The Accentra 4790LN Augusta is ANSI/BHMA A156.2 Series 4000 Grade 1 with fail safe electrified operation. The Hager 2580 with Withnell lever is a Grade 2 storeroom cylindrical lock for 1-3/8 inch to 2 inch doors, and the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt for 1-3/8 inch to 1-3/4 inch doors. Both are mechanical storeroom locks, so neither will release on a signal from an access control system.
12) Is a keypad lever lock such as the Delaney LP250 or Lockey 2835 an alternative to the Accentra 4790LN Augusta?
They solve a different problem. The Accentra 4790LN is a fail safe electrified cylindrical lever intended to be wired to an access control system and to unlock on loss of power. The Delaney LP250 is a Grade 2 electronic keypad leverlock and the Lockey 2835 is a mechanical pushbutton keyless lever with passage function for 1 3/16 inch to 2 inch doors. Those are standalone credential-at-the-door products with no wiring to a central system, so they suit an opening where you want code entry rather than remote release.
13) What finishes does the 4790LN Augusta lever come in?
Eight choices: 605 bright brass, 606 satin brass, 612 satin bronze, 613E dark oxidized satin bronze equivalent, 625 bright chrome, 626 satin chrome, plus black suede and white suede powder coat. The powder coats are the ones to look at if you are matching dark or white painted door hardware rather than plated trim.
14) What Grade 1 lever should I pair with the Accentra 4790LN on the non-secured doors in the same corridor?
For doors that need free passage alongside the electrified 4790LN Augusta openings, the Corbin Russwin CL3110 is a Grade 1 vandal resistant passage/closet cylindrical lever, fire rated, for 1-3/4 inch to 2 inch doors. The Falcon T101 is a Grade 1 heavy duty passage cylindrical lever with pressure release, and the Design Hardware X75 is a Grade 1 passage lever lockset with a flat lever for 1-3/4 inch doors. All keep the corridor at Grade 1 without adding wiring.
15) Does the Corbin Russwin 585F715 lever work as a replacement for an Accentra 4790LN?
No. The Corbin Russwin 585F715 is a Grade 1 lock lever for the ED8000 pushpad exit device and the CL3300 cylindrical lock series - a lever trim component rather than a complete lockset. The Accentra 4790LN Augusta is a full electrified cylindrical lever lock with latchbolt, guardbolt, cylinder and strike. If you need a whole lock for a bored door, choose a complete cylindrical lockset.
16) Can I use a BEST 9K dummy lever on a door where the Accentra 4790LN was specified?
Not as a functional replacement. The BEST 9K 1DT is a Grade 1 non-keyed single dummy trim - a fixed lever with no latch mechanism. The Accentra 4790LN Augusta is an electrified cylindrical lever lock with a 1/2 inch stainless steel latchbolt and guardbolt. Dummy trim only suits an inactive leaf or a pull-side application, not a latching or access-controlled opening.
How fast can I get the Accentra YAL-AU-4790LN-626 delivered?
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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 Accentra YAL-AU-4790LN-626 come with a warranty?
Absolutely. The Accentra YAL-AU-4790LN-626 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 Accentra YAL-AU-4790LN-626?
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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