Cal-Royal CDV24 Single Spring ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.51
Cal-Royal Cal-Royal CDV24 Single Spring Crash Chain Door Guard, With Vinyl, 21-3/4" Chain CDV24

Cal-Royal CDV24 Single Spring Crash Chain Door Guard with Vinyl Cover, 21-3/4" Chain

(No reviews yet) Write a Review

Model: CDV24

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

$8.51
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Cal-Royal CDV24 Single Spring Crash Chain Door Guard with Vinyl Cover, 21-3/4" Chain

The Cal-Royal CDV24 Single Spring Crash Chain Door Guard is a commercial-grade door accessory engineered to protect doors, hinges, and glass from wind damage while supplementing a regular door lock for added security. Featuring a 21-3/4" product length with a 24" steel chain, heavy gauge zinc brackets, and a 13/16" diameter hard-drawn wire spring, this door guard automatically throws the bolt when the chain is released. A weather and rip resistant vinyl cover protects the chain from wear, making this an ideal solution for commercial door applications requiring both protection and added security.

Key Features

  • Chain Length: 24" steel chain with a 21-3/4" overall product length for reliable door restraint.
  • Spring Specification: 13/16" diameter hard-drawn wire spring automatically throws the bolt when the chain is released.
  • Heavy-Duty Construction: Made with heavy gauge zinc brackets and steel chain for long-lasting commercial durability.
  • Wind Damage Protection: Protects doors, hinges, and glass from wind damage in high-traffic commercial settings.
  • Weather and Rip Resistant Vinyl Cover: Shields the chain from weather exposure and physical wear for extended service life.
  • Added Security Supplement: Equipped with a strong hard-drawn wire spring that works alongside a regular door lock for enhanced security control.
  • Convenient Packaging: Individually poly-bagged with mounting screws included for straightforward installation.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Guards
  • Product Type: Latch Protectors
  • Subcategory: Door Guards
  • Commercial/Residential: Commercial
  • Features: Supplement to a Regular Door Lock for Added Security; Equipped With a Strong Hard-Drawn Wire Spring Which Throws the Bolt Automatically When Chain is Released
  • Product Length: Chain: 24"; Product Length: 21-3/4"
  • Product Category: Door Trim 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 Cal-Royal CDV24?

Cal-Royal CDV24 door guard products deliver dependable, commercial-grade construction with heavy gauge zinc brackets, a durable steel chain, and a weather and rip resistant vinyl cover built for demanding door security applications. Engineered as a practical supplement to standard door locks, this door guard provides an added layer of protection where reliable, easy-to-install hardware is essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Guards
Product Type:
Latch Protectors
Subcategory:
Door Guards
Commercial/Residential:
Commercial
Features:
Supplement to a Regular Door Lock for Added Security; Equipped With a Strong Hard-Drawn Wire Spring Which Throws the Bolt Automatically When Chain is Released
Product Length:
Chain: 24"; Product Length: 21-3/4"
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal CDV24 – Frequently Asked Questions

1) Is a Cal-Royal CDV24 chain door guard the same thing as a latch protector plate?
No, and this trips people up. The CDV24 is a spring-loaded chain restraint that mounts on the inside face of the door and jamb, holds the door to a partial opening, and keeps wind from slamming it into the hinges or glass. A latch guard is a flat steel plate that covers the latch gap on the outside of the door to stop someone prying or shimming it. If prying at the latch is the problem, look at a plate like the Don-Jo LP-307 for aluminum storefront doors instead. The two solve different attacks and are often installed together.
2) Will a crash chain stop a commercial door from being blown open and wrecking the hinges?
That is what it is built for. The CDV24 restrains the door before it swings its full arc, which is where wind damage to the door, the hinges, and any glazing comes from. The hard-drawn wire spring, 13/16 inch in diameter, absorbs the shock of the catch rather than letting the chain snap taut against the brackets, and the brackets themselves are heavy gauge zinc. It is a commercial-rated accessory, so it is sized for entrances that see real traffic and real weather.
3) Does the chain guard lock the door on its own, or do I still need a lock?
You still need the lock. Cal-Royal lists the CDV24 as a supplement to a regular door lock, not a replacement for it. Its own security function is the spring, which throws the bolt automatically when the chain is released, so the guard re-sets itself instead of hanging loose after each use. Keep your primary lockset or exit device doing the actual securing.
4) I have an aluminum storefront door getting pried at the latch. Is a crash chain the right fix?
No. A chain guard limits how far the door opens from the inside; it does nothing about a pry bar working the latch gap from outside. For an out-swinging aluminum storefront, the fix is a latch protector plate over that gap, such as the Don-Jo LP-307 in 12-gauge steel at 2-5/8 by 7 inches, the GLP-307 in the same 2-5/8 by 7 inch footprint, or the wider NELP-207 at 3-1/2 by 6.5 inches. Trimco's PG8000 Series covers panic and latch guard applications as well.
5) Will a Don-Jo LP-307 latch protector do the same job as a Cal-Royal CDV24 chain door guard?
No - they solve different problems on the door. The Cal-Royal CDV24 is a crash chain door guard: a 24 inch steel chain with a 21-3/4 inch product length that restrains the door leaf, protecting doors, hinges, and glass from wind damage and supplementing a regular door lock. The Don-Jo LP-307 is a latch protector for aluminum storefront entrance doors, 2-5/8 inch by 7 inch in 12-gauge steel for an out swing opening - a plate that shields the latch area against pry attack at the strike. A storefront that gets caught by wind and slams open past its stop needs the chain; a storefront where someone is jimmying the latch needs the plate. Many openings get both.
6) Does the Cal-Royal CDV24 come with mounting screws, or do I need to supply my own?
Mounting screws are in the bag. The CDV24 ships individually poly-bagged with its screws, so a single unit is a complete install out of the package. Fastening into a hollow metal frame or an aluminum jamb is the usual case where an installer swaps in their own anchors.
7) Can I use one chain door guard across a mix of office, school, and apartment entrances?
Yes, and that is the usual reason property managers buy the CDV24 by the case. It is a single model, CDV24, with no handing, size, or finish choices to track, so every opening gets the same part and the same install. Cal-Royal calls it out for commercial offices, schools, healthcare, retail, industrial, multi-tenant residential, and government buildings. Standardize on the one number and your maintenance stock is one bin.
8) Why choose a single spring crash chain over a plain chain door guard?
A plain chain just hangs once you release it, and somebody has to re-seat the bolt by hand before the guard works again. The single spring version throws the bolt automatically when the chain is released, so it re-arms itself. On a door used dozens of times a day by tenants or staff, that is the difference between a guard that stays in service and one that ends up dangling.
9) I have exit devices on my aluminum doors - do I want the CDV24 or a Trimco panic guard?
Those address different failure points. The Trimco PG8000 Series is a panic and latch guard line, sized to shield the latch and panic hardware area of the opening. The Cal-Royal CDV24 is a chain door guard for commercial door hardware that restrains how far the leaf travels, using a 24 inch steel chain with heavy gauge zinc brackets and a weather and rip resistant vinyl cover over the chain. If the concern is attack on the exit device latch, look at the PG8000 Series; if the concern is wind catching the leaf and damaging the door, hinges, or glass, the CDV24 is the chain that limits it.
10) Which of these guards is right for a glass entrance door?
For a glass entrance door where the concern is the latch, the Don-Jo GLP-307 is built for aluminum entrance doors at 2-5/8 inch by 7 inch on an out swing opening. For a glass door where the concern is the leaf slamming, the Cal-Royal CDV24 chain guard is specifically intended to protect doors, hinges, and glass from wind damage, and its vinyl cover is weather and rip resistant so the chain does not mar the leaf or corrode at an exterior opening. On a glass front, those two answers do not overlap - pick by which way the door is failing.
11) What does the vinyl cover on the CDV24 door guard actually do?
It sleeves the steel chain so the links do not chew up the door face or the jamb finish as they swing, and it takes the weather rather than the chain taking it. Cal-Royal specifies it as weather and rip resistant, which is the reason this version exists for exterior openings where an uncovered chain would rust and mark the door.
12) Is there a wider latch protector than the LP-307 for a beat-up storefront strike area?
The Don-Jo NELP-207 covers 3-1/2 inch by 6.5 inch in 12 gauge steel for an out swing aluminum entrance door, so it is wider and slightly shorter than the Don-Jo LP-307 at 2-5/8 inch by 7 inch in 12-gauge steel. Both are out swing entrance-function protectors, so the choice comes down to which footprint lands over the damaged area and clears the existing hardware. Neither substitutes for the Cal-Royal CDV24, which restrains the leaf on a 24 inch chain rather than covering the strike.
13) How many CDV24 door guards do I get, and are they packed individually?
Each CDV24 is packed on its own, poly-bagged with its mounting screws, so you order per opening rather than per carton. That suits both a single service call and a multi-door rollout where each installer wants one sealed bag per door.
How fast can I get the Cal-Royal CDV24 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 CDV24 come with a warranty?
Absolutely. The Cal-Royal CDV24 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 CDV24?
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 CDV24 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.
!