FOLGER ADAMS 310 Electric Strikes (ESK-SGL, ESK-DBL)
The ESK-SGL (Single Electric) and ESK-DBL (Double Electric) Strikes are industrial grade and designed specifically for use in wood, metal and glass door applications. The stainless steel construction makes it ideal for strength and corrosion resistance.
Features
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Fail Safe/Fail Secure
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Non-handed
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3/4" keeper depth
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For use with Rockwood PDU8000 series panic devices and FL3301 flat latch locking pulls.
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Optional Latchbolt Monitoring (LCBMA): Sends signal to access control system when latchbolt is disengaged
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Plug-in connector
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Tamper-resistant, heavy duty stainless steel construction
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Available for single and double door applications
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Five-year limited warranty
Manufacturer Resources
Product Specs
- Series:
- 310-1 Series
- Subcategory:
- Electric Strikes
- Product Group:
- Electronic Access Controls
- Grade:
- Grade 1
- Warranty:
- 5 Year (10 Year when SmartPACIII)
- Compatibility:
- Cylindrical
- Endurance Cycles:
- 1,000,000
- Product Subgroup:
- Electric Strikes
- Product Type:
- Electric Strikes
- Lock Type:
- Mortise or Cylindrical
- Outdoor Rated:
- No
- Preload Capable:
- No
- Windstorm Rated:
- No
- Commercial/Residential:
- Commercial
- Electronic:
- Yes
- Fail-safe / Fail-secure:
- Field Selectable
- Product Model:
- ESK-DBL
- Product Voltage:
- 12/24 VDC
- Door Hand Direction:
- Non-Handed
- Fire Rating:
- Yes
- Product Substrate:
- Stainless Steel
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
Rockwood ESK-DBL-24D 32D – Frequently Asked Questions
1) Is the Folger Adam 310 ESK-DBL strike fail safe or fail secure, and can I change it in the field?
Field selectable, so one part covers both. You set the 310 ESK-DBL to fail safe (unlocks on power loss, typical on egress paths tied to a fire alarm release) or fail secure (stays locked on power loss) at install rather than ordering a different SKU. That matters when the spec on the drawing changes after the hardware is on site.
2) Do I need the LCBMA option on the Folger Adam 310 double door strike?
Only if your access control system needs door status back. LCBMA is the latchbolt and locking cam monitor with auxiliary switch, and it signals the panel when the latchbolt is disengaged, so you get positive confirmation the opening actually secured rather than just that the strike was told to relock. Skip it on a simple release application. Order it up front, since the strike also ships in a no-monitoring configuration.
3) Can I use this electric strike on a fire rated opening?
The Folger Adam 310 ESK-DBL carries a fire rating, and it's a Grade 1 strike. On a fire door you want it set fail secure so the opening stays latched under alarm. Note it is not rated for preload, so if the door is under pressure from a closer, wind, or stack effect at the moment of release, that's the wrong application for this strike.
4) What kind of lock does the ESK-DBL electric strike work with?
Mortise or cylindrical locksets, and it's set up for a 3/4 inch keeper depth. It's also built to pair with Rockwood PDU8000 series panic devices and FL3301 flat latch locking pulls, which is the common use on glass storefront and aluminum entry pairs. If your latch throw is shorter, the Adams Rite 7240 is a fire rated strike for cylindrical locksets with 5/8 inch latchbolt projection, and the SDC 25 Series covers 1/2 inch latchbolts.
5) Is the Folger Adam 310-4-2 the same thing as the ESK-DBL double electric strike?
No. The HES Folger Adam 310-4-2 is a complete electric strike pac for surface vertical rods, Grade 1, in the Folger Adam 310-4-X Series, and it is not fire rated. The ESK-DBL is a 310-1 Series double-door strike with a 3/4 inch keeper that is fire rated and works with Rockwood PDU8000 series panic devices and FL3301 flat latch locking pulls. Both carry the Folger Adam 310 name, but one is set up for a surface vertical rod device and the other for a 3/4 inch throw latch on a pair of doors, so they are not interchangeable.
6) What is the closest equivalent to the Folger Adam ESK-DBL double-door electric strike if I need the standard 310 strike body instead of the complete double-door unit?
The HES Folger Adam 310-1(X) electric strike body covers 1/2 inch, 5/8 inch or 3/4 inch throw latchbolts and is a Grade 1, fire rated 310 Series unit. The ESK-DBL is the 310-1 Series double-door configuration with a 3/4 inch keeper, Grade 1, fire rated, field selectable fail safe or fail secure, in 12/24 VDC. If the opening is a pair of doors already set up for the 310 keeper, the ESK-DBL is the drop-in; if you are ordering a strike body alone to match an existing prep and throw, the 310-1(X) is the same family in body-only form.
7) I need a Grade 1 fire rated electric strike for a cylindrical lockset on a single door, not a pair. What should I use instead of the Folger Adam ESK-DBL?
The Von Duprin 4211 32D is a Grade 1, fire rated, heavy duty electric strike for cylindrical locks with 12/24 VDC field-selectable operation, in the 4200 Series. The Hager 2930 is another fire rated Grade 1 strike for cylindrical and mortise locks with 12/24 VDC dual voltage and field reversible fail safe or fail secure operation. Both are single-opening strikes. The ESK-DBL is the double-door configuration with a 3/4 inch keeper, so for a single leaf with a cylindrical lock the 4211 or the 2930 is the matching form.
8) My jambs are aluminum storefront, not hollow metal or wood. Does the Folger Adam ESK-DBL fit, or is there a strike made for that?
The Adams Rite 7100 Series and the 7160 both are electric strikes for aluminum jambs with a 1-1/4 inch by 4-7/8 inch faceplate, and the Adams Rite 7170 is the hollow metal and wood jamb version of the same faceplate size. None of the three is fire rated. The Folger Adam ESK-DBL is for wood, metal and glass door applications with a 3/4 inch keeper and is fire rated. For a narrow aluminum storefront jamb, the 7100 or 7160 is the form built for that frame; the ESK-DBL suits the heavier pair-of-doors opening.
9) My latchbolt throw is 5/8 inch, not 3/4 inch. What electric strike matches that instead of the Folger Adam ESK-DBL?
The SDC 15 Series is a 5/8 inch latchbolt strike with 12/24 VDC operation, the SDC 45F Series is a fire-rated 5/8 inch latchbolt strike with a radius corner faceplate, and the Adams Rite 7240 is a fire-rated strike for cylindrical locksets with 5/8 inch latchbolt projection. The Hager 2925 is a 5/8 inch latch strike with field reversible fail safe or fail secure operation. The Folger Adam ESK-DBL is built around a 3/4 inch keeper depth, so measure the throw on the existing latch before ordering: a 5/8 inch latch belongs on one of the 5/8 inch strikes.
10) My power supply is AC, not DC. Can I use the Folger Adam ESK-DBL, or do I need a different strike?
The Folger Adam ESK-DBL runs on 12/24 VDC and is ordered in either a 12V or a 24V configuration. The Trine 004 strike operates at 8-16VAC, fail secure, with a 6-1/4 inch by 1-3/8 inch faceplate and up to 5/8 inch throw, and the Trine 2001 runs 16-24VAC/DC, fail secure, with a 5-7/8 inch by 1-1/4 inch faceplate and up to 5/8 inch throw. Both Trine units are fire rated. On an AC supply, those are the strikes built for that input; on a DC supply the ESK-DBL takes 12 or 24 VDC directly.
11) Does the ESK-DBL electric strike run on 12 or 24 volts?
Both are offered. The 310 ESK-DBL is built in 12V and 24V DC versions, and you pick the voltage when you order rather than switching it at the door. Match it to the power supply already feeding the access control panel. Each voltage is available with or without the LCBMA monitoring option.
12) Does the handing of my door matter when ordering the 310 ESK-DBL strike?
No. The 310 ESK-DBL is non-handed, so the same strike goes in regardless of which way the doors swing or which leaf is active. One part number covers the whole building, which is what you want if you're standardizing across a lot of openings.
13) How durable is the 310 ESK-DBL strike for a high traffic entrance?
Rated to 1,000,000 endurance cycles and Grade 1, with tamper resistant heavy duty stainless steel construction. That's the level you want on a main entry or a lobby pair that gets released hundreds of times a day. The stainless body also holds up better than plated steel in a damp interior vestibule, though it isn't rated for outdoor exposure.
14) What are the alternatives to the Folger Adam 310 ESK-DBL if it doesn't suit my opening?
Depends on where it falls short. For a pair with surface vertical rods, the HES Folger Adam 310-4-2 is a complete strike pac built for surface vertical rods (not fire rated). For a straight cylindrical or mortise lock application, the Von Duprin 6400 is a Grade 1 modular strike that handles either, fail secure, in satin stainless with a 3-hour UL 10C rating. The Hager 2930 is a fire rated Grade 1 strike for cylindrical and mortise locks with field reversible fail safe/secure and 12/24VDC dual voltage. The Camden CX-ED1799L-8 is a fire rated Grade 1 dual monitor strike shipping with eight faceplates if you don't yet know the frame prep.
15) Can I use this strike on a glass storefront door?
Yes. The 310 ESK-SGL and ESK-DBL strikes are made for wood, metal and glass door applications, which is why they're specified alongside Rockwood PDU8000 panic devices and FL3301 flat latch locking pulls on glass entries. The stainless construction is there for strength and corrosion resistance in that kind of high-use entrance. Keep in mind it isn't outdoor rated, so it belongs on an interior-facing frame condition.
16) What is a simpler electric strike than the Folger Adam ESK-DBL for a light duty interior door where fire rating and monitoring are not required?
The Trine 001 Series is a fail-secure light commercial electric strike with a 5-7/8 inch by 1-1/4 inch faceplate and is not fire rated. The RCI 15BS is an economy strike for special offset latch entry with fail-secure operation, also not fire rated. Both are fixed fail-secure. The Folger Adam ESK-DBL is Grade 1, fire rated, field selectable between fail safe and fail secure, rated to 1,000,000 endurance cycles, and available with the LCBMA monitor option. Where the door is interior, low traffic, and does not need a fire rating or a monitor signal, the Trine 001 or RCI 15BS covers the function with less hardware.
17) Which electric strike should I use if I cannot cut the existing frame prep?
The Locknetics NC450 is a no cut electric strike in the NC Series, and the Camden CX-ED1689L-4 is a fire rated universal low profile strike supplied with four faceplates, both intended for openings where the existing prep governs. The Camden CX-ED1410 and CX-ED1420 Series are universal Grade 1 ANSI fire-rated strikes as well. The Folger Adam ESK-DBL uses a 3/4 inch keeper on a pair of doors, so it assumes a prep sized for that keeper; where the frame cannot be modified, the no cut and universal-faceplate strikes are the ones to price.
18) The opening has latch preload from door closer pressure. Is the Folger Adam ESK-DBL the right strike?
The Folger Adam ESK-DBL is not preload capable, so on an opening where closer pressure or stack pressure loads the latch against the keeper it is not the strike to specify. The Von Duprin 6400 32D is a Grade 1 modular fail-secure strike for mortise or cylindrical locks with a 3-hour UL 10C fire rating in fail-secure, and the Securitron MUNL Series is a Grade 1 fire rated mortise unlatch strike; both are worth reviewing with the door's closer and lock combination before ordering. Confirm the preload condition at the opening first, since it decides the strike more than the lock type does.
19) Is the Folger Adam 310 ESK-DBL hard-wired or does it use a connector?
It uses a plug-in connector, so the strike drops into the frame and lands on the harness without splicing at the door. That's a real time saver on a pair, where you're running two sets of wire through the frame. Wiring is 12 or 24 VDC depending on which version you ordered.
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Absolutely. The Rockwood ESK-DBL-24D 32D is backed by a manufacturer’s warranty.
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