Adams Rite 4505-21-121 4000 Se...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$99.00
$70.22
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Adams Rite 4505-21-121 4000 Series MS Deadlock Flat Long Lip Armored Box Strike

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Model: 4505-21-121

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

$99.00
$70.22
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Adams Rite 4505-21-121 4000 Series MS Deadlock Flat Long Lip Armored Box Strike

The Adams Rite 4505-21-121 is a purpose-built replacement strike plate engineered for the Adams Rite 4000 Series MS Deadlock system. Featuring a flat, long lip armored box strike design, this commercial-grade component provides secure, reinforced deadlock engagement for aluminum storefront doors and frames. Finished in Dark Bronze Ritecoat Paint, it delivers both corrosion resistance and a professional aesthetic consistent with commercial door hardware installations.

Key Features

  • Flat Long Lip Design: The extended lip geometry ensures positive deadbolt engagement and helps guide the bolt smoothly into the strike box, reducing misalignment during operation.
  • Armored Box Strike Construction: Heavy-duty armored box strike configuration provides reinforced resistance against forced entry, maintaining security integrity in demanding commercial applications.
  • 4000 Series MS Deadlock Compatibility: Engineered specifically as a replacement part for Adams Rite 4000 Series MS Deadlock systems, ensuring precise fit and function without field modification.
  • Dark Bronze Ritecoat Paint Finish: Factory-applied Dark Bronze Ritecoat Paint finish offers durable protection against wear and corrosion while coordinating with common commercial door hardware finishes.
  • Commercial-Grade Quality: Designed and rated for commercial applications, meeting the performance expectations of high-use commercial door installations.
  • Genuine Adams Rite Replacement Part: An authentic Adams Rite factory replacement component, ensuring full compatibility and consistent performance with the original deadlock system.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Strike Plates
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 4505-21-121
  • Features: Adams Rite Parts

Typical Applications

  • Commercial Office Building Storefronts
  • Retail Storefront Aluminum Door Frames
  • Educational Facility Entry and Interior Doors
  • Healthcare Facility Access Points
  • Government and Municipal Building Entrances
  • Industrial and Warehouse Entry Doors
  • Multi-Tenant Commercial Properties

Why Adams Rite 4505-21-121?

Adams Rite has long been a trusted name in commercial door hardware, and the 4505-21-121 reflects that standard through its armored box strike construction and precision fit within the 4000 Series MS Deadlock platform. As a genuine factory replacement part with a durable Dark Bronze Ritecoat Paint finish, it ensures restored security performance and long-term reliability in professional commercial installations where consistent deadlock operation is essential.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Strike Plates
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
4505-21-121
Features:
Adams Rite Parts

Adams Rite 4505-21-121 – Frequently Asked Questions

1) Will the Adams Rite 4505-21-121 strike work with my 4000 Series MS deadlock?
That is exactly what it is built for. The 4505-21-121 is a flat, long lip armored box strike made as the factory replacement strike for Adams Rite 4000 Series MS Deadlock systems, so it fits and functions without field modification to the lock.
2) Is this Adams Rite strike for aluminum storefront frames or for a wood door jamb?
Aluminum storefront. The 4505-21-121 armored box strike is made for aluminum storefront doors and frames running an MS deadlock. For a wood jamb with a residential-style deadbolt, a plate-and-box set such as the Kwikset 81640 strike box or the Emtek 83223 deadbolt strike plate is the right family of part.
3) Can I use an adjustable residential deadbolt strike instead of the Adams Rite armored box strike?
No. Parts like the Kwikset 80318 full round adjustable strike or the 81825 six way adjustable deadlatch are built for residential bored prep, not for the MS deadlock cutout in an aluminum jamb. An MS deadlock needs the matching Adams Rite armored box strike to engage properly.
4) Can a standard residential deadbolt strike plate be used in place of the Adams Rite 4505-21-121 on an aluminum storefront door?
No. The 4505-21-121 is a flat long lip armored box strike built specifically for the Adams Rite 4000 Series MS Deadlock in aluminum storefront doors and frames, where the bolt throw and frame prep are unique to that lock. Residential-style deadbolt strikes such as the Deltana SP2753, a 2-3/4 inch by 1-1/4 inch steel deadbolt strike plate, or the Emtek 83223 standard deadbolt strike plate with square corners are cut for wood-door deadbolt prep and will not reproduce the armored box pocket the MS Deadlock bolt needs.
5) What finish does the Adams Rite 4505-21-121 box strike come in?
One finish only: 121, Dark Bronze. If the rest of your storefront hardware is clear anodized aluminum or black, this strike will read darker than the surrounding trim, so match it to bronze openings.
6) What does the long lip on this Adams Rite box strike actually do?
The extended lip guides the deadbolt into the strike box as the door closes, which helps on openings where the door has settled slightly out of alignment. The armored box behind it reinforces the frame against forced entry on the bolt.
7) I manage a building with several storefront doors on MS deadlocks. Will this strike match across all of them?
If those openings use Adams Rite 4000 Series MS deadlocks and dark bronze hardware, yes. The 4505-21-121 is the genuine Adams Rite replacement strike for that platform in 121 dark bronze, so it keeps appearance and bolt engagement consistent from door to door.
8) What strike should I use if the frame hole is off and the bolt is not centering?
The Adams Rite 4505-21-121 is a fixed flat long lip armored box strike with no built-in adjustment; its long lip is meant to guide the bolt when the frame prep is correct for the 4000 Series MS Deadlock. Where the opening is a conventional deadbolt in a drilled frame rather than an MS Deadlock in aluminum, adjustable strikes exist for that situation, such as the Kwikset KWI-80318 full round adjustable strike or the Kwikset 81825 six way adjustable deadlatch. Those are deadbolt strike plate parts and are not a fit for MS Deadlock prep.
9) Is a strike box or dust box the same thing as the Adams Rite 4505-21-121 armored box strike?
They are not interchangeable. Parts like the Kwikset 81640 strike box and the Kwikset 81231-001 metal strike dust box are separate bolt pockets that sit behind a strike plate in a bored frame. The Adams Rite 4505-21-121 combines the strike face and the armored box in one purpose-built component for the 4000 Series MS Deadlock, so no separate dust box is added behind it.
10) We standardize commercial openings on ASA strike plates - does the Adams Rite 4505-21-121 fit that prep?
No. An ASA strike, such as the Codelocks ASA strike plate in stainless steel, uses the common ANSI-style face and frame cutout found on cylindrical and mortise locks in hollow metal frames. The Adams Rite 4505-21-121 is a flat long lip armored box strike prepped for the Adams Rite 4000 Series MS Deadlock in aluminum storefront framing, so the two are cut for different openings and cannot be swapped one for the other.
11) Is the Adams Rite 4505-21-121 rated for commercial traffic or is it a light duty part?
It is a commercial part. Adams Rite lists the 4505-21-121 as a commercial-grade replacement strike used on office and retail storefronts, schools, healthcare and municipal entries, and industrial doors.
How fast can I get the Adams Rite 4505-21-121 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 Adams Rite 4505-21-121 come with a warranty?
Absolutely. The Adams Rite 4505-21-121 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 Adams Rite 4505-21-121?
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 Adams Rite 4505-21-121 from ZenSupply?
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