Don-Jo FL-212N4 Security Strik...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$35.98
Don-Jo FL-212N4 Security Strike 12" x 1-3/8" Ferrous Steel Commercial Door Strike

Don-Jo FL-212N4 Security Strike 12" x 1-3/8" Ferrous Steel Commercial Door Strike

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Model: FL-212N4-BP
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$35.98
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Don-Jo FL-212N4 Security Strike 12" x 1-3/8" Ferrous Steel Commercial Door Strike

The Don-Jo FL-212N4 is a heavy-duty commercial security strike measuring 12" in height and 1-3/8" in width, constructed from 13-gauge (.095) ferrous material for exceptional strength and long-term durability. Designed for commercial door applications, this security strike features two latch holes to accommodate a variety of latch configurations and is available in multiple finishes including BP, SL, and WH to suit diverse installation environments. Its robust ferrous construction makes it an ideal choice for high-traffic commercial settings where reliable door security is essential.

Key Features

  • Precise Dimensions: Measures 12" in height and 1-3/8" in width, providing ample coverage for commercial door frame applications.
  • Heavy-Gauge Ferrous Construction: Manufactured from 13-gauge (.095) ferrous material, delivering superior strength and resistance to forced entry in demanding commercial environments.
  • Dual Latch Hole Configuration: Features 2 latch holes to accommodate a range of latch styles and configurations for versatile installation compatibility.
  • Multiple Finish Options: Available in BP, SL, and WH finishes to coordinate with existing door hardware and architectural requirements.
  • Commercial-Grade Security: Engineered specifically for commercial applications where enhanced door security and durability are required.
  • Convenient Shelf Pack: Packaged in shelf packs of 10, making it practical for contractors and distributors managing multiple installations.

Technical Specifications

  • Subcategory: Door Strikes
  • Product Group: Parts and Accessories
  • Product Subgroup: Door Strikes and Strike Boxes
  • Product Type: Door Strikes
  • Commercial/Residential: Commercial
  • Product Category: Parts and Accessories
  • Department: Door Hardware

Typical Applications

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

Why Don-Jo FL-212N4?

Don-Jo security strikes are built to professional-grade standards, with the FL-212N4 featuring 13-gauge (.095) ferrous construction that delivers the structural integrity demanded by commercial door hardware applications. Engineered for reliability in high-traffic environments, this security strike provides the robust performance and installation flexibility that contractors and facility managers depend on for long-lasting door security solutions.

Manufacturer Resources

DON-JO Strike Plates

Product Specs

Subcategory:
Door Strikes
Product Group:
Parts and Accessories
Product Subgroup:
Door Strikes and Strike Boxes
Product Type:
Door Strikes
Commercial/Residential:
Commercial
Product Model:
FL 212N4
Door Strike:
Security Strike
Product Category:
Parts and Accessories
Product Substrate:
Ferrous
Department:
Door Hardware

Don-Jo FL-212N4-BP – Frequently Asked Questions

1) What is a Don-Jo FL-212N4 security strike actually for, and does it replace my existing strike plate?
The FL-212N4 is a wrap-style commercial security strike, 12 inches by 1-3/8 inches, that covers a long run of the frame around the latch rather than just the small pocket a standard ANSI strike occupies. It goes on where the jamb has been kicked, pried, or chewed up, or where you want more steel across the latch area than a 4-7/8 inch ANSI lip strike gives you. It is not a lock or a latch, it is the frame-side plate the latch throws into.
2) Why does the Don-Jo FL-212N4 have two latch holes?
Two latch holes let one plate serve either a single latch at one position or a lock with both a latchbolt and a deadbolt above it, which is the common case on a commercial entry with an entry lock and a separate deadbolt. Since the plate runs 12 inches up the jamb, it spans both preps at once instead of needing two separate strikes.
3) Will a 1-3/8 inch wide security strike fit my door frame?
1-3/8 inches wide suits a standard hollow metal or wood jamb where the strike sits on the stop face. Measure from the door stop to the outer edge of the jamb face before ordering, that flat is the surface the plate lands on. If the frame has a narrow face or a deep rabbet that leaves less than 1-3/8 inches of flat, the plate will overhang and you want a narrower strike instead.
4) Can I use the Don-Jo FL-212N4 on a pair of doors with no mullion?
No. This is a jamb-mounted strike for a single active leaf, it needs a frame face to screw into. For a double door where the inactive leaf carries the strike, look at a purpose-built double door strike kit such as the Detex 92 Strike Kit, which is made for that condition and comes with tamper resistant fasteners.
5) Is the Detex 92 strike kit a substitute for the Don-Jo FL-212N4 security strike?
They solve different openings. The Don-Jo FL-212N4 is a 12 inch by 1-3/8 inch security strike in 13-gauge (.095) ferrous material with two latch holes, meant to cover and reinforce the frame at the latch on a commercial door. The Detex 92 Strike Kit is part of the Detex 90 Strike Series and is built for a double door application, supplied with tamper resistant fasteners. If the opening is a pair of doors and the strike has to land on the inactive leaf, the Detex 92 kit is the one built for that; for a single frame where the goal is a longer steel strike face over the latch area, the FL-212N4 is the correct form.
6) How thick is the steel on the Don-Jo FL-212N4 strike?
13 gauge, which is .095 inch ferrous steel. That is the number that matters on a security strike, because the plate's job is to spread a pry or kick load across the frame instead of letting it concentrate at the latch pocket. Thin decorative strike plates in the .050 range flex and tear at the screw holes; .095 does not.
7) Is the FL-212N4 sold individually or in a pack?
It ships in shelf packs of 10. That works out well if you are standardizing a run of openings across a property or stocking a truck, less well if you need exactly one plate for one door.
8) Do I need to mortise the frame to install a Don-Jo FL-212N4?
The FL-212N4 is a surface applied plate, it goes over the existing frame face and the existing latch prep, which is exactly why it works as a repair on a jamb that has already been damaged. Order the correct model designation, FL 212N4, since Don-Jo's strike line runs many lengths and hole configurations under similar numbers.
9) What is the difference between a Trimco 1260P pipe adapter strike and a Don-Jo FL-212N4 security strike?
The Trimco 1260P is a pipe adapter strike from the Trimco 1260 Series, supplied as a strike only, and it exists to let a latch strike against a round pipe or tube rather than a flat frame. The Don-Jo FL-212N4 is a flat 12 inch by 1-3/8 inch security strike in 13-gauge (.095) ferrous material with two latch holes, mounted to a conventional commercial door frame. If what the door latches into is pipe or tubing, the 1260P is the adapter that makes that work; the FL-212N4 will not conform to a round section.
10) What finishes does the Don-Jo FL-212N4 come in?
Brass plated (BP) and silver coated (SL). SL is the usual pick when the strike is going on a painted hollow metal frame or alongside satin chrome and brushed nickel lever trim, BP when the opening is already brass. On a painted frame either one takes paint fine, so match to whatever the rest of the building's hardware runs.
11) Is this security strike rated for commercial use or is it a residential product?
Commercial. Don-Jo builds the FL-212N4 for the traffic and abuse level you get in offices, schools, healthcare, retail, warehouses, and multi-tenant residential, where the frame takes daily impact. The 13 gauge material is the reason it holds up there.
How fast can I get the Don-Jo FL-212N4-BP delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 Don-Jo FL-212N4-BP come with a warranty?
Absolutely. The Don-Jo FL-212N4-BP 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 Don-Jo FL-212N4-BP?
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
Why buy the Don-Jo FL-212N4-BP from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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