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
- Verify electrical requirements match available power supply and confirm fail safe operation configuration before proceeding with installation.
- Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
- 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.
- Route and connect electrified wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the fail safe application.
- 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.
- Configure fail safe operational settings and test all functions including normal operation, electrified release, and emergency egress capability.
- 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.
Manufacturer Resources
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