Von Duprin 970321 Strike Shim ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$21.00
$14.46
Von Duprin 970321 Strike Shim for 299 Roller Strikes, Non-Handed ANSI Grade 1 Accessory

Von Duprin 970321 Strike Shim for 299 Roller Strikes, Non-Handed ANSI Grade 1 Accessory

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Model: 970321

In Stock (leaves warehouse same day if ordered before 3pm ET)

$21.00
$14.46
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Von Duprin 970321 Strike Shim for 299 Roller Strikes, Non-Handed ANSI Grade 1 Accessory

Precision Alignment Solution for Commercial Exit Device Strikes

The Von Duprin 970321 Strike Shim is a commercial-grade, precision-cut metal plate engineered to reduce the spacing between the strike and the latch bolt on Von Duprin 299, 264, 299F, 499F, and Falcon FA299 roller strikes. Measuring 2-7/8" L x 1-1/4" W x 1/16" Thick and finished in Zinc/Gold Tone, this heavy-duty metal shim restores proper latch engagement on doors affected by misalignment, settling, or heavy-traffic wear. Certified to ANSI/BHMA Grade 1 standards and featuring a non-handed (universal) design, the 970321 is compatible with Von Duprin 22, 88, 98, and 99 Rim series devices as well as surface vertical rod devices including the 98/9957, 2227, 8827, 9827, and 9927 series.

Professional Features & Benefits

  • Precision Dimensions: Measures 2-7/8" L x 1-1/4" W x 1/16" Thick, providing an exact fit to close the clearance gap between the strike and latch bolt for reliable door engagement.
  • Precision Alignment Correction: Specifically engineered to reduce the clearance gap between the strike and the latch bolt, restoring proper engagement and securing the opening without expensive door modifications or complete hardware replacements.
  • Heavy-Duty Metal Construction: Built from durable, high-quality heavy-duty metal to withstand constant impact and heavy-use wear in demanding commercial environments, weighing approximately 1.0 oz.
  • Universal Series Compatibility: Designed to seamlessly support Von Duprin 22, 88, 98, and 99 Rim series panic hardware, as well as surface vertical rod devices (98/9957, 2227, 8827, 9827, and 9927), and is also listed as part number 970321-89.
  • Strike Compatibility: Reduces spacing for Von Duprin 299, 264, 299F, 499F, and Falcon FA299 strikes, making it a versatile solution across multiple strike configurations.
  • ANSI/BHMA Grade 1 Certified: Meets the highest commercial standards for security, durability, and performance, making it ideal for schools, hospitals, and public facilities.
  • Non-Handed Design: Universal construction allows the shim to be mounted on either left-hand or right-hand doors without modification, simplifying installation and inventory management.
  • Manufacturer Warranty: Backed by a Limited 5-Year Mechanical Manufacturer Warranty for added confidence and long-term protection.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Product Subgroup: Parts and Accessories
  • Product Type: Strikes
  • Subcategory: Parts and Accessories
  • Commercial/Residential: Commercial
  • Compatibilty: Rim Strike/Vertical Rod Strike
  • Product Category: Exit Devices Parts
  • Product Function: Strike
  • Department: Door Hardware

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 Von Duprin Quality?

Von Duprin strike shim accessories deliver professional-grade reliability through heavy-duty metal construction certified to ANSI/BHMA Grade 1 standards, ensuring consistent performance in the most demanding commercial environments. The 970321 is backed by a Limited 5-Year Mechanical Manufacturer Warranty, providing long-term confidence for facility managers and installers alike. Engineered for compatibility across multiple Von Duprin panic hardware series, this precision accessory is a cost-effective solution for maintaining secure, code-compliant exit door operation.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Product Subgroup:
Parts and Accessories
Product Type:
Strikes
Subcategory:
Parts and Accessories
Commercial/Residential:
Commercial
Compatibility:
Rim Strike/Vertical Rod Strike
Product Category:
Exit Devices Parts
Product Function:
Strike
Department:
Door Hardware

Von Duprin 970321 – Frequently Asked Questions

1) My Von Duprin 299 strike isn't catching the latch anymore since the door settled. Will the 970321 shim fix that?
That's exactly what the 970321 strike shim does. It's a precision-cut metal plate that goes behind the strike to reduce the spacing between the strike and the latch bolt, restoring engagement on openings thrown off by misalignment, settling, or heavy-traffic wear. It works on Von Duprin 299, 264, 299F and 499F strikes, plus the Falcon FA299. At 1/16 inch thick, it closes the gap without door or frame modification, so you're not re-prepping the frame or replacing hardware.
2) Which Von Duprin exit devices does the 970321 shim work with?
The 970321 supports the Von Duprin 22, 88, 98 and 99 Rim series devices, and surface vertical rod devices including the 98/9957, 2227, 8827, 9827 and 9927 series. The shim itself works on the strike side, so what actually governs fit is the strike: 299, 264, 299F, 499F or Falcon FA299.
3) What size is the Von Duprin 970321 strike shim?
The 970321 measures 2-7/8 x 1-1/4 x 1/16 inches. The 1/16 inch dimension is the thickness, which is the number that matters: that's how much closer the shim brings the strike to the latch bolt. If your gap is wider than that, you'd stack a second shim or look at the frame alignment itself.
4) Do I need to order a left-hand or right-hand version of the 970321 shim?
Neither. The 970321 is non-handed, so the same part mounts on a left-hand or right-hand door with no modification. For a property manager or a maintenance shop stocking parts, that means one line item covers every opening in the building instead of two.
5) Is the Von Duprin 970321 shim approved for use on a school or hospital exit door?
The 970321 strike shim is certified to ANSI/BHMA Grade 1, the commercial standard institutional specs are normally written to, and it's a commercial-duty part built from heavy-duty metal. It's used on office, school, healthcare, retail, warehouse, multi-tenant and government openings. Note that it corrects strike-to-latch spacing on 299-family strikes; it is not a substitute for having the door and frame in proper alignment on a fire-rated opening.
6) Can I use the 970321 shim on a vertical rod exit device, or is it only for rim panic hardware?
Both. The 970321 covers rim strikes and vertical rod strikes, which is why it lists against the 22, 88, 98 and 99 rim devices as well as the 2227, 8827, 9827, 9927 and 98/9957 surface vertical rod devices. On a vertical rod pair it's the top or bottom roller strike you're shimming, not a center strike.
7) What's the difference between the 970321 shim and just replacing the 299 strike?
The shim is the cheaper, faster move when the strike itself is fine and the geometry has drifted. The 970321 sits behind a working 299, 264, 299F, 499F or FA299 strike and pulls it 1/16 inch closer to the latch. Replace the strike instead when the roller is worn out, the strike body is damaged, or you're changing to a fire-labeled strike. If the gap is the only problem, the shim solves it without touching the frame prep.
8) I ordered a part called 970321-89. Is that the same as the Von Duprin 970321 strike shim?
Same part. The Von Duprin strike shim for 299 roller strikes is also listed as 970321-89. If a prior order or a shop drawing calls out either number, the 2-7/8 x 1-1/4 x 1/16 inch non-handed shim is what you're getting.
How fast can I get the Von Duprin 970321 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 Von Duprin 970321 come with a warranty?
Absolutely. The Von Duprin 970321 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 Von Duprin 970321?
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 Von Duprin 970321 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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