Delaney 4" UL Listed Door Knoc...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$16.50
$13.28
Delaney Hardware Delaney 4" UL Listed Door Knocker with 160 Degree Viewer DLY-400x10UL

Delaney 4" UL Listed Door Knocker with 160 Degree Viewer

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Model: 400410UL
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$16.50
$13.28
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Delaney 4" UL Listed Door Knocker with 160 Degree Viewer

  • Knocker made from forged brass
  • Length: 4"
  • Width: 1-3/4"
  • Projection: 5/8"
  • UL Listed 90 Minute Fire Doors
  • Dimensions: 4" x 1-3/4"

Manufacturer Resources

Product Specs

Subcategory:
Door Knockers and Viewers
Series:
4" Door Knocker
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Knockers and Viewers
Product Type:
Door Knockers with Viewers
Product Dimension:
4" x 1 3/4"
Product Category:
Door Trim and Accessories
Product Substrate:
Brass
Department:
Door Hardware

Delaney Hardware 400410UL – Frequently Asked Questions

1) Can I put a door knocker and peephole on a 90 minute fire rated door?
The Delaney 4 inch door knocker with viewer is UL Listed for 90 minute fire doors, so it can go on a rated opening without voiding the door label. That matters on multi-family corridor doors and hotel entry doors, where the unit entry is almost always a rated assembly and most decorative knockers are not permitted on one.
2) How much of the door face does the Delaney 4 inch knocker with viewer cover?
It covers a 4 by 1-3/4 inch footprint and stands 5/8 inch off the face. On a narrow stile or a door with a tight lite frame, that 1-3/4 inch width is the number to check against the flat area you have above the lockset.
3) How wide can you see through the Delaney knocker viewer?
The built in viewer gives a 160 degree field, which covers the full width of a corridor or a landing right up to the door face, so someone standing to the side of the opening is still visible. It combines the knocker and the peephole in one unit, so the door only needs the single bored hole rather than a separate viewer bore.
4) Is the Delaney door knocker solid brass or plated pot metal?
Forged brass. That is the reason it holds up on an exterior entry where a cast zinc knocker pits and the plating lifts, and it is why the striking plate can take repeated use in a rental or hotel setting.
5) What finishes does the Delaney 4 inch UL listed knocker with viewer come in?
Two: 622 matte black and 619 satin nickel. Both are BHMA finish numbers, so they will read the same as 622 and 619 hardware from other manufacturers already on the building, which is what matters when you are standardizing entry doors across a property.
How fast can I get the Delaney Hardware 400410UL 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 Delaney Hardware 400410UL come with a warranty?
Absolutely. The Delaney Hardware 400410UL 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 Delaney Hardware 400410UL?
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 Delaney Hardware 400410UL 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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