Don-Jo ULDV-50 180 Degree Door...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.57
Don-Jo ULDV-50 180 Degree Door Viewer with UL Rated Glass Lens

Don-Jo ULDV-50 180 Degree Door Viewer with UL Rated Glass Lens

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Model: ULDV-50-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$18.57
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Don-Jo ULDV-50 180 Degree Door Viewer with UL Rated Glass Lens

The Don-Jo ULDV-50 is a UL Rated 180 Degree Door Viewer featuring a quality glass lens, designed to fit doors ranging from 1-3/8" to 2" in thickness. Carrying ANSI designation L23221, this door viewer offers a 1/2" view dimension and is available in finishes 605 and 626 to complement a variety of residential door styles. Engineered for reliable performance, the ULDV-50 delivers a wide 180-degree field of view for enhanced entry visibility and security.

Key Features

  • 180 Degree Viewing Angle: Provides a full 180-degree field of view for maximum visibility of the area outside the door.
  • Door Thickness Compatibility: Fits doors ranging from 1-3/8" to 2" thick, accommodating a wide range of standard residential door sizes.
  • View Dimension: Features a 1/2" view dimension for a clear, focused sightline through the door.
  • UL Rated Construction: UL Listed (ANSI L23221) glass lens construction meets recognized safety and performance standards.
  • Glass Lens: High-quality glass lens provides clear, undistorted viewing for reliable identification of visitors.
  • Multiple Finish Options: Available in finishes 605 and 626 to coordinate with existing door hardware and décor.
  • Convenient Shelf Pack: Sold in shelf packs of 10, making it ideal for contractors and multi-unit residential projects.

Certifications & Compliance

  • UL Rated
  • ANSI L23221

Technical Specifications

  • Subcategory: Accessory Hardware
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Knockers and Viewers
  • Product Type: Door Viewers
  • Commercial/Residential: Residential
  • Product Model: ULDV 180, ULDV 50, ULDV 90
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Single-Family Residential Entry Doors
  • Multi-Unit Apartment and Condominium Buildings
  • Townhome and Duplex Properties
  • Student Housing and Dormitory Facilities
  • Senior Living and Assisted Care Communities
  • Vacation Rental and Short-Term Rental Properties
  • Light Commercial and Mixed-Use Building Entry Points

Why Don-Jo ULDV-50?

Don-Jo ULDV-50 Door Viewers are built to meet UL Rating standards and carry ANSI L23221 certification, ensuring verified safety and optical performance. With a glass lens, 180-degree viewing angle, and compatibility with doors from 1-3/8" to 2" thick, the ULDV-50 delivers dependable, professional-grade visibility for residential entry applications where reliable identification of visitors is essential.

Manufacturer Resources

DON-JO Accessory Hardware

Product Specs

Subcategory:
Accessory Hardware
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Knockers and Viewers
Product Type:
Door Viewers
Commercial/Residential:
Residential
Product Model:
ULDV 180, ULDV 50, ULDV 90
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Don-Jo ULDV-50-626 – Frequently Asked Questions

1) Will the Don-Jo ULDV-50 door viewer fit a 1-3/4 inch entry door?
Yes. The ULDV-50 covers doors from 1-3/8 inches to 2 inches thick, so a standard 1-3/4 inch commercial or residential entry door is right in the middle of that range. Older 1-3/8 inch interior doors work too, but anything thicker than 2 inches needs a different viewer.
2) My apartment doors are 2-1/8 inches thick. Can I still use the Don-Jo ULDV-50?
No. The ULDV-50 tops out at 2 inches of door thickness. For a 2-1/8 inch door, look at the Hager 1759, which lists 1-3/8 to 2-1/8 inches, or the Trimco 975 and 976 at 1-17/64 to 2-1/8 inches. For doors from 2 to 2-1/2 inches, the Rockwood 621 is the UL Listed option.
3) Is there a door viewer like the Don-Jo ULDV-50 but with a privacy cover?
The Don-Jo ULDV-50 is an open 180 degree viewer with no cover. If tenants want to close off the lens, the Cal-Royal PRIULDV200 is a UL listed privacy viewer with a 200 degree glass lens and a privacy cover, the Hager 1759 is a 185 degree one way viewer with a privacy flap, the Rockwood 624 is a 160 degree viewer with a cover for 1-3/8 inch to 2 inch doors, and the Trimco 977 pairs a 200 degree lens with a heavy duty cover.
4) I need a fire rated door viewer - does the Don-Jo ULDV-50 work or should I pick something else?
The Don-Jo ULDV-50 is a UL rated viewer with ANSI designation L23221 and is catalogued for residential entry use. Where the opening calls specifically for a fire rated viewer, the Ives U698 is a UL fire rated wide angle viewer at 190 degrees, the Ives U696 is fire rated at 150 degrees, and the Ives U700 and Ives 701 are fire rated brass viewers, with the 701 at 120 degrees. The Hager 1756 is a 185 degree one way viewer with a fire rating.
5) What is the closest equivalent to the Don-Jo ULDV-50 door viewer from another brand?
The Don-Jo ULDV-50 is a UL rated 180 degree viewer with a glass lens that fits doors 1-3/8 inch to 2 inch thick. The closest match on door thickness is the Rockwood 620, which also covers 1-3/8 inch to 2 inch doors and gives a 160 degree view. If you want the wider field of view instead, the Sure-Loc 180 degree door viewer for residential doors matches the ULDV-50 viewing angle, and the Sure-Loc 160 degree door viewer carries a UL listed rating.
6) My door is thicker than 2 inches - what door viewer should I use instead of the Don-Jo ULDV-50?
The Don-Jo ULDV-50 is built for doors 1-3/8 inch to 2 inch thick, so a thicker slab needs a different viewer. The Rockwood 621 is UL listed and covers 2 inch to 2-1/2 inch doors at 160 degrees. The Hager 1759 covers 1-3/8 inch to 2-1/8 inch and the Hager 1756 is listed at 2-1/8 inch, both at 185 degrees. Trimco's 975 (160 degree) and 976 (200 degree) both cover 1-17/64 inch to 2-1/8 inch.
7) What finishes does the Don-Jo ULDV-50 come in, and will it match my existing door hardware?
Two finishes: 605 polished brass and 626 satin chrome. 605 pairs with bright brass knobs and locksets, 626 with satin chrome or brushed nickel-toned trim. If your building runs a mix, ordering one finish per stack keeps it consistent across a fleet of units.
8) How many door viewers come in a pack of the Don-Jo ULDV-50?
The ULDV-50 ships in shelf packs of 10. That works out well for apartment, condo, and student housing turns where you are doing a whole floor at once rather than a single door.
9) What is the difference between the Don-Jo ULDV-50 and the ULDV-90 or ULDV-180?
They are three models in the same Don-Jo UL-rated viewer family: ULDV 50, ULDV 90, and ULDV 180. The ULDV-50 is the 180 degree version with a glass lens for 1-3/8 to 2 inch doors, ANSI L23221. Order by the exact model number, since the family members are not interchangeable.
10) Is a 180 degree viewer worth it over a 160 degree one?
A wider angle lets you see someone standing flat against the door or off to the side rather than centered in front of it, which is the usual complaint with narrower viewers. The ULDV-50 gives a full 180 degrees. Common alternatives sit lower or higher: Rockwood 619, 620, 621 and 624 and the Sure-Loc DV160-UL are 160 degree, the Ives U698 is 190 degree, and the Trimco 976 and 977 reach 200 degree.
11) Can I use the Don-Jo ULDV-50 to replace a Rockwood 620 viewer in the same door?
Both cover the same 1-3/8 to 2 inch door thickness range, so the opening depth is not an issue. The differences are the viewing angle, 180 degrees on the Don-Jo versus 160 on the Rockwood 620, and the finish options, 605 polished brass or 626 satin chrome on the ULDV-50. Confirm the existing bore diameter matches before you swap.
12) What is a wider angle alternative to the Don-Jo ULDV-50?
The Don-Jo ULDV-50 gives a 180 degree field of view through a glass lens. For a wider sightline, the Trimco 976 and Trimco 977 are both 200 degree viewers covering 1-17/64 inch to 2-1/8 inch doors, the Cal-Royal PRIULDV200 is a UL listed 200 degree glass lens viewer, and the Ives U698 is a UL fire rated wide angle viewer at 190 degrees.
13) The Don-Jo ULDV-50 is too big for my thin door - what fits a narrow slab?
The Don-Jo ULDV-50 starts at 1-3/8 inch door thickness, so it will not seat correctly in a thinner door. The Rockwood 619 is a 160 degree viewer built for 11/16 inch to 1-1/16 inch doors, and the Trimco 975 starts at 1-17/64 inch. Confirm the slab measurement before ordering, since a viewer sized past the door thickness will not draw tight from both faces.
14) Is the Emtek 2610 door viewer the same thing as the Don-Jo ULDV-50?
They are not interchangeable. The Emtek 2610 is a solid brass door viewer that installs in a 5/8 inch diameter hole. The Don-Jo ULDV-50 is a UL rated 180 degree viewer with a glass lens for doors 1-3/8 inch to 2 inch thick, supplied in finishes 605 polished brass and 626 satin chrome. If you are replacing one with the other, check the existing bore against the 5/8 inch figure before committing.
15) I am standardizing viewers across an apartment building - how do the Don-Jo ULDV-50 and Rockwood 620 compare?
Both cover the same door thickness range of 1-3/8 inch to 2 inch, which is the usual span for apartment entry slabs. The Don-Jo ULDV-50 provides a 180 degree view with a UL rated glass lens and ANSI designation L23221, in 605 polished brass or 626 satin chrome. The Rockwood 620 provides a 160 degree view over that same thickness range. If some units need a closable lens, the Rockwood 624 covers the identical 1-3/8 inch to 2 inch range with a cover.
How fast can I get the Don-Jo ULDV-50-626 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 Don-Jo ULDV-50-626 come with a warranty?
Absolutely. The Don-Jo ULDV-50-626 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 Don-Jo ULDV-50-626?
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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