When selecting a commercial door lock, one of the first specifications you'll encounter is the ANSI/BHMA grade. Lock grades are designed to help architects, contractors, facility managers, and business owners choose hardware that matches the level of traffic and performance required for a building.
The two most common grades used in commercial applications are Grade 1 and Grade 2. While both are built for commercial use, they are intended for different environments and levels of door usage.
In this guide, we'll explain the differences between Grade 1 vs. Grade 2 door locks, where each should be used, and highlight popular lock series from leading manufacturers such as SARGENT, Schlage, Corbin Russwin, Yale (Accentra), Falcon, and Best Access Systems.
What Is an ANSI/BHMA Lock Grade?
The Builders Hardware Manufacturers Association (BHMA), in conjunction with ANSI (American National Standards Institute), establishes testing standards for commercial door hardware. These standards evaluate a lock's durability, strength, and performance through rigorous testing, including operational cycles, impact resistance, and security requirements.
The three primary lock grades are:
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Grade 1: Highest commercial performance rating
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Grade 2: Medium-duty commercial rating
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Grade 3: Residential/light-duty applications
For most commercial buildings, Grade 1 and Grade 2 are the relevant choices.
Grade 1 Door Locks
Grade 1 locks are designed for high-traffic commercial environments where doors are opened and closed thousands of times each year. These locks undergo the most demanding testing and are commonly specified for facilities where reliability and durability are critical.
Common Applications
Grade 1 locks are ideal for:
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Schools and universities
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Hospitals and healthcare facilities
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Government buildings
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Airports
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Hotels
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Office building entrances
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Industrial facilities
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Financial institutions
Popular Grade 1 Commercial Lock Series
|
Brand |
Product Series |
Lock Type |
|
SARGENT |
Cylindrical Lock |
|
|
SARGENT |
Mortise Lock |
|
|
Schlage |
Cylindrical Lock |
|
|
Schlage |
Mortise Lock |
|
|
Corbin Russwin |
Mortise Lock |
|
|
Corbin Russwin |
Cylindrical Lock |
|
|
Yale (Accentra) |
Mortise Lock |
These product lines are frequently specified by architects for demanding commercial applications because of their proven performance and long service life.
Grade 2 Door Locks
Grade 2 locks are intended for medium-duty commercial environments where doors experience moderate daily traffic. They provide dependable security and durability while offering a cost-effective solution for many interior commercial spaces.
Common Applications
Grade 2 locks are commonly used for:
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Interior office doors
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Conference rooms
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Medical offices
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Small retail stores
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Apartment common areas
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Employee break rooms
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Storage rooms
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Professional service offices
Popular Grade 2 Commercial Lock Series
Examples of commercial Grade 2 options include:
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Schlage ALX Series (selected configurations)
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Falcon T Series
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Yale Commercial cylindrical lock offerings (4700 Accentra)
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Sargent 7G Series
These locks are often selected where the door does not experience constant heavy traffic but still requires commercial-grade performance.
Grade 1 vs. Grade 2: Key Differences
|
Feature |
Grade 1 |
Grade 2 |
|
Intended Use |
Heavy-duty commercial |
Medium-duty commercial |
|
Best For |
High-traffic doors |
Moderate-traffic doors |
|
Typical Locations |
Schools, hospitals, government |
Offices, retail, interior doors |
|
Durability |
Highest commercial rating |
Commercial rating for moderate use |
|
Long-Term Performance |
Excellent for demanding environments |
Excellent for everyday commercial use |
The key takeaway is that the choice depends on where the lock will be installed, not simply which grade is "better."
Where Should You Use Grade 1 Locks?
Grade 1 locks are the preferred choice for doors that are opened frequently throughout the day or where dependable performance is essential.
Examples include:
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Main building entrances
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Classroom doors
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Hospital corridors
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Public restrooms
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High-security offices
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Government facilities
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Hotel guest room corridors
These locations benefit from hardware designed to withstand continuous operation over many years.
Where Should You Use Grade 2 Locks?
Grade 2 locks are well suited for spaces where traffic is moderate and the demands on the hardware are less intensive.
Ideal applications include:
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Interior offices
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Conference rooms
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Employee-only areas
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Medical suites
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Retail back offices
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Apartment management offices
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Storage closets
In these environments, Grade 2 locks offer an excellent balance of performance and value.
Popular Commercial Brands to Consider
When choosing commercial door hardware, selecting a trusted manufacturer is just as important as choosing the correct grade.
Some of the industry's leading brands include:
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SARGENT – Known for the 10X Cylindrical Lock and 8200 Mortise Lock Series, widely used in education, healthcare, and government buildings.
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Schlage – Offers the ND Series, ALX Series, and L Series, providing solutions for a wide range of commercial applications.
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Corbin Russwin – The ML2000 Mortise Lock and CL3300 Cylindrical Lock are common choices for institutional and government projects.
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Yale (Accentra) – Provides durable commercial locking solutions for offices, healthcare facilities, and mixed-use buildings.
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Falcon – Offers dependable commercial hardware for schools, offices, and retail spaces.
Choosing the Right Lock Grade
Before selecting a lock, consider the following questions:
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Will the door experience heavy daily traffic?
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Is it a main entrance or an interior office?
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Does the building require long-term durability with minimal maintenance?
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Is the lock part of a larger commercial hardware specification?
If the door serves as a primary entrance or experiences constant use, a Grade 1 lock is typically the appropriate choice. For interior openings with moderate traffic, Grade 2 hardware often provides the performance required while helping manage project costs.
Frequently Asked Questions
Is Grade 1 better than Grade 2?
Grade 1 represents the highest commercial performance rating. However, Grade 2 is often the right choice for moderate-traffic commercial applications. The best option depends on the door's purpose and usage.
Can Grade 2 locks be used in commercial buildings?
Yes. Grade 2 locks are commonly used in offices, retail stores, medical facilities, and other commercial spaces where traffic levels are moderate.
What is the most popular Grade 1 cylindrical lock?
Popular options include the SARGENT 10X Series, Schlage ND Series, and Corbin Russwin CL3300 Series, depending on the project's requirements.
What is the most popular Grade 1 mortise lock?
The SARGENT 8200 Series, Schlage L Series, and Corbin Russwin ML2000 Series are among the most widely specified mortise locks for commercial applications.
Do schools typically use Grade 1 locks?
Yes. Most schools, universities, and healthcare facilities specify Grade 1 hardware because of the high volume of daily traffic and the need for reliable long-term performance.
Conclusion
Understanding the difference between Grade 1 and Grade 2 door locks is essential when specifying commercial door hardware. Rather than focusing on which grade is universally better, the goal is to match the lock to the demands of the opening.
Grade 1 locks are best suited for high-traffic commercial environments such as schools, hospitals, government buildings, and major office entrances, while Grade 2 locks are an excellent solution for interior offices, conference rooms, retail spaces, and other moderate-use applications.
At QualityDoor.com, you'll find a wide selection of commercial door locks from trusted manufacturers, including SARGENT, Schlage, Corbin Russwin, Yale (Accentra), Falcon, and Best Access Systems. Whether you're outfitting a new commercial building or replacing existing hardware, choosing the correct lock grade will help ensure reliable performance, long-term durability, and a secure environment for years to come.