Cal-Royal DROP-400 Flat Drop B...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.68
Cal-Royal Cal-Royal Flat Drop Brackets for 400 Door Closers Series CAL-DROP-400

Cal-Royal DROP-400 Flat Drop Bracket for 400 Series Door Closers

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Model: 402-ALUM
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$22.68
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Cal-Royal DROP-400 Flat Drop Bracket for 400 Series Door Closers

The Cal-Royal DROP-400 Flat Drop Bracket is a purpose-built accessory designed for use with Cal-Royal 400 Series concealed door closers. This flat drop bracket is non-handed, allowing straightforward installation on either left- or right-handed door configurations without requiring a specific mirrored version. Built for commercial door control applications, this bracket is an essential component for technicians and facility managers maintaining or installing 400 Series closer systems. As a Door Controls accessory within the Concealed Door Closers subcategory, it supports proper closer mounting and function in demanding commercial environments.

Key Features

  • Flat Drop Bracket Design: Engineered specifically for compatibility with Cal-Royal 400 Series door closers.
  • Non-Handed Configuration: A single bracket design works for both left- and right-hand door applications, simplifying inventory and installation.
  • Commercial-Grade Application: Suited for use in commercial door control systems requiring reliable concealed closer support.
  • Direct Series Compatibility: Designed to integrate with the Cal-Royal 400 Series concealed door closer product line for accurate fit and function.
  • Parts and Accessories Category: Classified under Door Controls parts and accessories, making it easy to identify as a compatible replacement or upgrade component.

Technical Specifications

  • Subcategory: Concealed Door Closers
  • Product Group: Door Controls
  • Product Subgroup: Parts and Accessories
  • Product Type: Parts and Accessories
  • Commercial/Residential: Commercial
  • Product Model: DROP 400
  • Product Category: Door Controls
  • 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 Cal-Royal DROP-400?

Cal-Royal door control accessories are designed to integrate seamlessly with their corresponding closer series, ensuring proper fit and reliable function for commercial installations. The non-handed design of the DROP-400 bracket simplifies procurement and installation, reducing complexity for contractors and facility maintenance teams working with 400 Series closers.

Product Specs

Subcategory:
Concealed Door Closers
Product Group:
Door Controls
Product Subgroup:
Parts and Accessories
Product Type:
Parts and Accessories
Commercial/Residential:
Commercial
Product Model:
DROP 400
Product Category:
Door Controls
Department:
Door Hardware

Cal-Royal 402-ALUM – Frequently Asked Questions

1) Which Cal-Royal door closers does the DROP-400 flat drop bracket fit?
Two bracket models are sold under the Cal-Royal DROP-400 flat drop plate line, and they cover different closers. The 402 flat drop plate is for the 420-P closer (size 2). The 703 flat drop plate is for the 720 and 730 closers (sizes 2 and 3). Pick by the closer model stamped on the body, not by the door.
2) Can I use a Cal-Royal 402 drop plate on an LCN or Norton closer?
No. The 402 and 703 flat drop plates are cut for Cal-Royal closer bodies, the 420-P on the 402 and the 720 and 730 on the 703. Other brands use their own brackets. For LCN, the 1260-18QF Quick Fix bracket kit covers the 1000 Series and the 1260-30 Cush Shoe Support handles a 3-1/16 inch reveal on the 1260 Series. Match brackets to the closer brand and series every time.
3) My closer needs a shoe support for a deep reveal, not a drop plate. What should I order?
A drop plate and a reveal shoe solve different mounting problems. The Cal-Royal DROP-400 flat drop bracket lowers the closer mounting position for Cal-Royal 400 Series closers and does nothing about reveal depth. For a deep reveal on a parallel arm closer, the LCN 1260-30 Cush Shoe Support is built for 3-1/16 inch reveal compatibility in the LCN 1260 Series. Confirm which closer is on the door first, since the LCN shoe support is an LCN 1260 Series part and the Cal-Royal bracket is specific to the Cal-Royal 400 Series.
4) What does a flat drop bracket actually do on a door closer install?
It lowers the closer mounting point off the frame face so the closer body clears the frame stop or soffit condition it would otherwise foul. On a Cal-Royal install you add the drop plate when the opening geometry will not let the closer sit flat against the frame. It is a mounting accessory only, it does not change the closer's spring size or sweep.
5) My Cal-Royal closer arm hits the frame. Is a drop plate the fix, or do I need a different arm?
Depends on what is binding. If the closer body cannot sit flush because of frame geometry, the flat drop plate is the correct part, and you would use the 402 for a 420-P or the 703 for a 720 or 730. If the problem is reveal at the arm end rather than the body, that is an arm or shoe issue instead, the way an LCN 1260-30 cush shoe support addresses a 3-1/16 inch reveal, or a Dorma 15323 1-1/2 inch offset bottom arm handles an offset condition. Diagnose which end is fouling before you order.
6) Is the DROP-400 the closer itself or just the mounting plate?
Just the plate. The DROP-400 is a mounting accessory, so the closer body, arm and any cover come separately. If you are replacing a whole opening's hardware you need the 420-P, 720 or 730 closer as well, depending on which plate you order.
7) Can I use the Deltana DCCA4041 or DCHA1050 arm in place of a Cal-Royal drop bracket?
No. The Deltana DCCA4041 is a cushion arm for the Deltana DC40 closer and the DCHA1050 is a hold open arm for the DC10 closer. Both are arms, which is the linkage between the closer body and the door or frame. The Cal-Royal DROP-400 is a flat drop plate that relocates the closer mounting position on a Cal-Royal 400 Series closer. An arm cannot substitute for a drop plate, and the Deltana arms are matched to Deltana DC10 and DC40 closers rather than the Cal-Royal 400 Series.
8) What finishes does the Cal-Royal 402 and 703 flat drop plate come in?
Three finishes: Aluminum (the standard), Duronodic, and Gold. Both the 402 and the 703 plate are offered in all three, so you can match the bracket to the closer cover already on the opening. Cal-Royal publishes a finish maintenance and care guide if you are cleaning these in a high-traffic entry.
9) Is the DROP-400 bracket rated for commercial traffic or is it a residential part?
Commercial. Cal-Royal lists the DROP-400 as a commercial door control component, and it is used in office buildings, schools, hospitals, retail, warehouses, multi-tenant residential and municipal facilities.
10) Do I need to order a left-hand and right-hand version of the Cal-Royal drop bracket the way some closer arms are handed?
No. The Cal-Royal DROP-400 flat drop bracket is non-handed, so one part covers both left- and right-hand door configurations and there is no mirrored version to stock. What you do choose is the plate model and finish: model 402 for the 420-P size 2 closer or model 703 for the 720 and 730 closers in sizes 2 and 3, each in aluminum, duronodic, or gold. By contrast, the Dorma 15323 is a 1-1/2 inch offset bottom arm with cover, a standard duty part that is not fire rated, so arm geometry rather than a single non-handed plate governs that selection.
How fast can I get the Cal-Royal 402-ALUM 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 Cal-Royal 402-ALUM come with a warranty?
Absolutely. The Cal-Royal 402-ALUM 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 Cal-Royal 402-ALUM?
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 Cal-Royal 402-ALUM 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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