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When a standard electric strike is not enough for the application, specifiers turn to the 310/4. The Folger Adam 310/4 is an industrial-grade, 3-hour fire-rated electric strike designed specifically for rim panic devices with Pullman style latchbolts up to 3/4 inch. Built entirely from stainless steel, it handles high-abuse environments that would compromise lighter-duty strikes. Whether you are specifying a single door or the active leaf of a pair, the 310/4 is built to the exacting performance and code compliance standards that commercial projects demand. This guide covers what makes it the right choice and when to specify it.
What Makes the Folger Adam 310/4 the Right Spec for High-Abuse Rim Panic Applications
Most electric strikes are not built for the punishment that comes with rim exit devices on heavy-traffic commercial doors. The 310/4 is designed specifically for that punishment. Several features in its construction make it stand apart from standard strikes.
The entire unit is stainless steel. There is no painted steel casing, no plastic component, and no composite housing. The result is a strike that resists corrosion, stands up to repeated impact, and does not degrade in environments where temperature swings, cleaning chemicals, or moisture would compromise lesser hardware. Industrial facilities, correctional settings, and institutional buildings that specify this unit do so because replacing a failed strike mid-project is not an option.
The 310/4 includes a unique 3/4 inch face plate with an integrated 1/4 inch base shim. That shim can be removed in the field to accommodate rim exit devices with either a 1/2 inch or 3/4 inch throw latchbolt, without ordering a different model or sending hardware back. On active job sites, that field-adjustable configuration saves real time.
Strength ratings are not theoretical on this unit:
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Static strength: 1,500 lbs
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Dynamic strength: 70 ft-lbs
These figures hold across both fail secure and fail safe configurations. The PK keeper is standard, matched specifically to Pullman style latchbolts as found on rim exit devices from Von Duprin, Sargent, and similar manufacturers.
The 310/4 operates on 12VDC at 0.51 amps or 24VDC at 0.25 amps, continuous duty. It is field selectable between fail secure and fail safe, which means the correct configuration for any door type can be set during installation without returning to the supplier.
Why the 310/4 Belongs on Your Next Commercial Fire-Rated Opening
This is not a strike you use because it is available. You specify the 310/4 because it is the correct product for fire-rated rim panic device applications and there is no practical substitute that meets the same compliance requirements.
The 310/4 carries a 3-hour fire rating and conforms to NFPA 252, ASTM E152, and CAN4-S104/ULC-S104 standards. It is UL 1034 burglary-resistant listed, UL 294 sixth edition listed, and ANSI/BHMA A156.31 Grade 1 certified. It is also accepted by New York City, which has some of the most stringent compliance requirements of any jurisdiction in the country.
Every one of those certifications matters when your AHJ reviews the hardware schedule. A strike without the correct fire listing on a fire-rated opening is a code violation. A strike without the correct UL listing on a security-sensitive opening creates liability. The 310/4 covers both without requiring a secondary product.
For specifiers working on:
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Hospitals and healthcare facilities with secure corridor doors on fire-rated walls
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Government and institutional buildings requiring burglary-resistant listed hardware
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Schools with panic-hardware-equipped fire doors
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High-security commercial buildings in jurisdictions requiring NYC acceptance
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Industrial facilities with heavy-traffic egress doors
The 310/4 is the correct single-product answer. It does not require supplemental hardware to meet the listing requirements most of these applications demand.
The all-stainless construction also means no corrosion-related failures in facilities with regular wet mopping, chemical cleaning, or food service environments. Stainless steel at this grade does not rust, does not pit, and does not lose dimensional stability from temperature cycling. That matters on doors that are opened and closed hundreds of times a day for decades.
Conclusion
The Folger Adam 310/4 is not a general-purpose electric strike. It is an industrial-grade, fire-rated product built specifically for rim panic device applications where standard hardware cannot meet the load, environment, or compliance requirements. Static strength at 1,500 lbs, all stainless steel construction, field-selectable fail modes, and fire listings across UL, ANSI, NFPA, and ASTM standards make it the correct specification for demanding commercial openings. If your project has a fire-rated rim exit device door in a high-abuse environment, this is the strike to order. Browse the full Folger Adam 310/4 at American Locksets, authorized dealer since 2001, with same-day shipping from US warehouses.
Frequently Asked Questions
What latchbolt size does the Folger Adam 310/4 work with?
It accommodates Pullman style latchbolts up to 3/4 inch. The removable base shim allows field adjustment for 1/2 inch or 3/4 inch throw without changing models.
What voltage does the 310/4 require?
It accepts 12VDC at 0.51 amps or 24VDC at 0.25 amps. Both operate continuous duty. Voltage is specified at the time of order.
Is the Folger Adam 310/4 fire rated?
Yes. It carries a 3-hour fire rating and conforms to NFPA 252, ASTM E152, and ULC-S104 standards. It is listed for use on fire door assemblies.
Can the 310/4 be used on a pair of doors?
Yes. It is designed for single door openings or the active leaf of a pair equipped with a surface vertical rod exit device with Pullman latches.
What is the fail mode configuration on the 310/4?
It is field selectable between fail secure and fail safe. The correct mode is set during installation to match the door type and applicable code requirement.
What certifications does the Folger Adam 310/4 carry?
UL 1034 burglary-resistant, UL 294 sixth edition, ANSI/BHMA A156.31 Grade 1, NYC acceptance, NFPA 252, ASTM E152, and CAN4-S104/ULC-S104.
Where can I buy the Folger Adam 310/4?
American Locksets carries the full 310/4 line from stock with same-day shipping. Browse the product page at americanlocksets.com or call 8774714870.