Ives Forged Brass Door Knocker...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$77.00
$36.19
Ives Forged Brass Door Knocker with UL Listed Fire Door Viewer - Dual Door Thickness Models

Ives Forged Brass Door Knocker with UL Listed Fire Door Viewer - Dual Door Thickness Models

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Model: IVE-02-31252U-626
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$77.00
$36.19
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Ives Forged Brass Door Knocker with UL Listed Fire Door Viewer - Dual Door Thickness Models

Professional Door Security and Communication Solution

The Ives forged brass door knocker with integrated UL listed viewer combines traditional door communication with modern security viewing capability. This dual-function hardware accommodates door thicknesses from 7/8" to 2-1/8" with two model options: 02-31251U for 7/8" - 1-9/16" doors and 02-31252U for 1-5/8" - 2-1/8" doors. The solid brass construction with glass lens provides durability for residential applications, while UL 90-minute fire door listing ensures code compliance for fire-rated installations.

Professional Features & Benefits

  • Dual Door Thickness Compatibility: Model 02-31251U accommodates 7/8" - 1-9/16" door thickness, while 02-31252U fits 1-5/8" - 2-1/8" doors for versatile installation options.
  • UL Fire Door Rating: UL listed 90-minute fire door certification ensures compliance with fire safety codes and building requirements.
  • Forged Brass Construction: Solid brass body with glass lens provides exceptional durability and weather resistance for exterior door applications.
  • Tamper-Resistant Installation: Secure one-way thread installation prevents unauthorized removal and ensures long-term security.
  • Dual Functionality: Combines traditional door knocker communication with safe viewing capability to identify visitors before opening the door.
  • Simple Through-Door Installation: Viewer bolts directly through the door for straightforward installation without complex mounting requirements.
  • Optional Security Enhancements: Compatible with viewer covers that rotate out of the way for viewing access while preventing unauthorized viewing when closed.
  • Expandable Design: Viewer extensions available in 3/8" increments to accommodate any door thickness beyond standard ranges.

Technical Specifications

  • ANSI/BHMA: ANSI/BHMA A156.16, L23161
  • Commercial/Residential: Residential
  • Department: Door Hardware
  • Features: Has Viewer
  • Product Category: Door Trim and Accessories
  • Product Dimension: 5-15/16"x 3" x 1-1/16"
  • Product Group: Door Trim and Accessories
  • Product Model: 02-31251U/31252U
  • Product Subgroup: Door Knockers and Viewers
  • Product Substrate: Brass
  • Product Type: Door Knockers with Viewers
  • Subcategory: Exterior Hardware

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness compatibility with selected model (02-31251U for 7/8" - 1-9/16" or 02-31252U for 1-5/8" - 2-1/8").
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for through-door installation.
  3. Prepare door by drilling required holes as specified in manufacturer instructions for viewer bolt-through installation.
  4. Install viewer component through door opening and secure with one-way thread installation for tamper resistance.
  5. Mount door knocker component to exterior door surface ensuring proper alignment with viewer assembly.
  6. Test viewer operation for clear sight lines and knocker function for proper sound transmission. Refer to manufacturer documentation for complete installation details and optional accessory integration.

Professional Applications

  • Residential Front Door Security
  • Multi-Unit Residential Properties
  • Apartment and Condominium Complexes
  • Single-Family Home Entrance Doors
  • Fire-Rated Door Applications
  • Historic Building Restoration Projects
  • Custom Home Construction

Why Choose Ives Quality?

Ives door knockers and viewers deliver professional-grade reliability with forged brass construction and UL 90-minute fire door certification for demanding residential applications. The tamper-resistant one-way thread installation and solid brass body with glass lens ensure long-term durability and security. Engineered to handle exterior elements while providing essential door communication and security viewing functionality.

Manufacturer Resources

Ives Full Line Catalog

Product Specs

Product Group:
Door Trim and Accessories
Subcategory:
Exterior Hardware
Product Subgroup:
Door Knockers and Viewers
Product Type:
Door Knockers with Viewers
ANSI/BHMA:
ANSI/BHMA A156.16, L23161
Commercial/Residential:
Residential
Features:
Has Viewer
Product Model:
02-31251U/31252U
Product Dimension:
5-15/16"x 3" x 1-1/16"
Product Category:
Door Trim and Accessories
Product Substrate:
Brass
Department:
Door Hardware

Ives IVE-02-31252U-626 – Frequently Asked Questions

1) Which Ives door knocker with viewer do I order for a 1-3/4 inch entry door?
Order the 02-31252U. Ives splits this knocker-and-viewer unit into two models by door thickness: the 02-31251U carries the U700 viewer for 7/8 inch to 1-9/16 inch doors, and the 02-31252U carries the U701 viewer for 1-5/8 inch to 2-1/8 inch doors. A 1-3/4 inch door, the standard commercial and exterior residential thickness, sits in the middle of the 02-31252U range. Measure the door leaf itself, not the frame, before you pick, because the viewer barrel length is what changes between the two models and the knocker plate is common to both.
2) My door is thicker than 2-1/8 inches. Can I still use the Ives 02-31252U knocker viewer?
Yes, with an extension. The 02-31252U covers 1-5/8 inch to 2-1/8 inch as supplied, and Ives offers viewer extensions in 3/8 inch increments to take the viewer beyond that range. That is the route for a thick solid-core or fire-rated slab, or a door with an applied panel or added cladding on the face. The extension goes on the viewer barrel; the knocker plate on the exterior face is unchanged.
3) Is this Ives knocker and viewer one unit, or do I buy the peephole separately?
It is one assembly. The knocker plate and the viewer ship together and share a single through-door prep, so you are drilling the door once instead of setting a knocker on the face and boring a separate peephole above it. On the order you specify two things only: the model that matches your door thickness (02-31251U or 02-31252U) and the finish. Optional viewer covers, which swing out of the way to look through and close off the lens the rest of the time, are a separate add-on if you want them.
4) What other door knockers come with a built-in viewer?
Besides the Ives 02-31251U/02-31252U forged brass knocker with UL listed viewer, Delaney Hardware builds the same knocker-plus-viewer combination in two body sizes: the Delaney 6 inch Door Knocker with 160 Degree Viewer (DLY-4001) and the Delaney 4 inch Door Knocker with 160 Degree Viewer (DLY-400x10). The Ives unit is forged brass with a glass lens and is offered as two thickness-specific models, the 02-31251U with the U700 viewer for 7/8 inch to 1-9/16 inch doors and the 02-31252U with the U701 viewer for 1-5/8 inch to 2-1/8 inch doors, in 605 bright brass, 619 satin nickel, 625 bright chrome, 626 satin chrome, 643E aged bronze and 622 matte black.
5) Can a tenant or an intruder unscrew an Ives door viewer knocker from the outside?
No. The viewer installs with a one-way thread, so it drives in from the exterior and will not back out with a standard tool. That matters on rental and condo entry doors, where a removable viewer barrel leaves an open hole straight through the leaf. It also means that if you ever need the unit off, plan on destructive removal of the viewer rather than a clean unthread.
6) How much of the door face does the Ives 02-31251U knocker cover, and will it clear my existing hardware?
The unit measures 5-15/16 x 3 x 1-1/16 inches. Lay that out on the stile before you drill: on a narrow-stile or glazed entry door, and on a door that already carries a mail slot, a house number plate, or an escutcheon, the plate footprint is what decides whether it lands centred at eye height without crowding anything. The 1-1/16 inch figure is the projection off the face, which is what you check against a storm door or screen door swinging in front of it.
7) What ANSI/BHMA designation do I put on the submittal for an Ives door knocker with viewer?
ANSI/BHMA A156.16, product code L23161. A156.16 is the auxiliary hardware standard, and the L-number is the specific product type designation an architect or spec writer expects to see against a door viewer line item. Pair that with the UL 90 minute fire door listing and the model number for the door thickness, 02-31251U or 02-31252U, and the submittal is complete.
8) Is this Ives knocker viewer suitable for a commercial building entrance?
Ives classifies the 02-31251U and 02-31252U as residential hardware. The natural home for it is apartment, condo, and single-family entry doors, including rated unit entry doors where the UL 90 minute viewer listing is required. For a commercial storefront or a high-cycle public entrance, a knocker is not the right device anyway, and you would be looking at an entrance pull and a wide-angle commercial viewer instead.
9) How does the Ives brass knocker with viewer compare to the Delaney knocker viewers?
Delaney offers two combination knocker-viewers, a 6 inch and a 4 inch, both with a 160 degree viewer, and the size choice there is about the look of the plate on the door. The Ives 02-31251U and 02-31252U split on a different axis: the model you pick is set by door thickness, 7/8 to 1-9/16 inch or 1-5/8 to 2-1/8 inch, and the plate is a single size at 5-15/16 x 3 x 1-1/16 inches. The Ives unit is forged brass and its viewer is UL listed for 90 minute fire doors, which is the deciding factor on a rated unit entry door.
10) I need a bigger knocker plate than the Ives unit. What else is there?
If the Ives plate at 5-15/16 x 3 x 1-1/16 inches reads small on a wide entry door, Delaney's 6 inch knocker with a 160 degree viewer is the larger-footprint alternative, and Delaney also makes a 4 inch version if you want something more restrained. Understand the trade before you switch: the Ives 02-31251U and 02-31252U are the two that are matched to a specific door thickness range and carry the UL 90 minute fire door listing on the viewer, so on a rated opening the plate size is the wrong thing to optimise.
11) The door face is tight and a 6 inch knocker will not sit right. What is the smaller option?
The Delaney 4 inch Door Knocker with 160 Degree Viewer (DLY-400x10) is the short-body version of Delaney's combination unit, against the 6 inch body of the DLY-4001. The Ives 02-31251U/02-31252U forged brass knocker with UL listed viewer measures 5-15/16 inch by 3 inch by 1-1/16 inch overall, so it lays out close to the 6 inch Delaney on the door face and wants the same kind of clear stile height.
12) Will a brass door knocker with a glass viewer hold up on a west-facing exterior door?
The body is forged brass with a glass lens, which is why Ives lists it as exterior hardware. Brass does not rust and the glass lens will not craze or yellow the way an acrylic viewer lens does after a few seasons of direct sun. One thing to know going in: the 605 bright brass and 625 bright chrome are polished finishes and will show weathering outdoors unless they are maintained, so on an exposed opening the 643E aged bronze, 622 matte black, or the satin 619 and 626 hold their appearance with less attention.
13) Can I stop people seeing in through the door viewer from outside?
Yes, with an optional viewer cover. It rotates clear when you want to look out and closes over the lens the rest of the time, which blocks the reverse-peephole trick and stops light bleeding out through the barrel at night. The cover is ordered separately from the 02-31251U or 02-31252U and is worth adding on ground-floor units and doors that open onto a shared corridor.
How fast can I get the Ives IVE-02-31252U-626 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 Ives IVE-02-31252U-626 come with a warranty?
Absolutely. The Ives IVE-02-31252U-626 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 Ives IVE-02-31252U-626?
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
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