SOSS 416 Series Invisible Hing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$299.30
$236.90
SOSS 416 Series Invisible Hinge, 4-5/8" Alloy Steel with Fire Rating

SOSS 416 Series Invisible Hinge, 4-5/8" Alloy Steel with Fire Rating

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Model: 416US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$299.30
$236.90
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SOSS 416 Series Invisible Hinge, 4-5/8" Alloy Steel with Fire Rating

The SOSS 416 Series Invisible Hinge is a full-size, 4-5/8" alloy steel door hinge engineered for wood or metal applications requiring a minimum material thickness of 1-3/8" (rated for doors up to 1-3/4" thick). Designed for flush fit, compact concealment, and smooth single-action operation, this hinge opens a full 180° and is Underwriters Laboratories labeled for fire-rated applications up to 90/180 minutes depending on door construction. Wood and machine screws are included for straightforward installation on full-sized entry doors in metal or wood.

Key Features

  • Product Size: 4-5/8" hinge body sized for full-size entry doors.
  • Minimum Material Thickness: Designed for doors and frames with a minimum thickness of 1-3/8", suitable for doors up to 1-3/4" thick.
  • Fire Rating: UL labeled for use on hollow metal, sheet metal, tin clad, and steel composite fire doors and frames rated up to and including 3 hours (180 minutes); wood core doors and frames up to 20 minutes; and wood/plastic composite doors constructed with Georgia Pacific FS 1 or FS 2 banding rated up to and including 90 minutes.
  • Heavy-Duty Construction: Made of alloy steel for superior appearance and long-term durability in demanding commercial environments.
  • Full 180° Single-Action Operation: Provides smooth, reliable swing with a flush, invisible profile when the door is closed.
  • Corner Style: Featuring 5/8" radius rounded corners for a refined, finished look.
  • Screws Included: Both wood and machine screws are provided for versatile installation on metal or wood doors.
  • Fire Door Hinge Quantity Guidance: Use at least one fire-rated hinge for every 20" of door height (or portion thereof) or one hinge for every 60 lbs. (or fraction thereof), whichever calculation requires more hinges.

Certifications & Compliance

  • Underwriters Laboratories (UL) Labeled
  • Fire Rated up to 3 Hours (180 Minutes) on Hollow Metal, Sheet Metal, Tin Clad, and Steel Composite Doors
  • Fire Rated up to 20 Minutes on Wood Core Doors and Frames
  • Fire Rated up to 90 Minutes on Wood/Plastic Composite Doors with Georgia Pacific FS 1 or FS 2 Banding

Technical Specifications

  • Corner Style: 5/8" Radius Corners
  • Subcategory: Hinges and Pivots
  • Commercial/Residential: Commercial
  • Product Group: Door Hinges and Pivots
  • Product Type: Hinges and Pivots
  • Duty Level: Heavy Duty
  • Electronic: No
  • Corner Type: Rounded
  • Series: 416 Series
  • Product Size: 4-5/8"
  • Product Category: Door Hinges and Pivots
  • Department: Door Hardware
  • Application: Full Sized Entry, Metal, Wood
  • Min. Material Thickness: 1-3/8″
  • Fire Rating: 90 / 180 Minutes
  • Power Transfer: No
  • Closer: No
  • Counter Bored Screw Holes: No
  • Screws Included: Wood and Machine
  • Packaging: 1 / Box = 1 Each
  • Packages Per Container: 1 Each
  • Price Per: Each

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why SOSS 416?

The SOSS 416 Series delivers professional-grade reliability through alloy steel construction and UL-labeled fire ratings up to 180 minutes, making it a trusted choice for demanding commercial door applications. Its invisible, flush-fit design combines superior appearance with smooth 180° single-action operation, ensuring dependable performance where compact size and durability are essential.

Product Specs

Corner Style:
5/8" Radius Corners
Subcategory:
Hinges and Pivots
Commercial/Residential:
Commercial
Product Group:
Door Hinges and Pivots
Product Type:
Hinges and Pivots
Product Subgroup:
Invisible Hinges
Duty Level:
Heavy Duty
Electronic:
No
Corner Type:
Radius
Series:
416 Series
Product Function:
Invisible Hinges
Product Size:
4-5/8"
Product Category:
Door Hinges and Pivots
Product Substrate:
Alloy Steel
Department:
Door Hardware

SOSS 416US26D – Frequently Asked Questions

1) Will a SOSS 416 invisible hinge work on a 1-3/8 inch door?
Yes. The 416 Series is built for wood or metal doors and frames with a minimum material thickness of 1-3/8 inches, and it works on doors up to 1-3/4 inches thick. Below 1-3/8 inches there isn't enough material for the mortise pocket, so a thinner door needs a smaller invisible hinge instead.
2) Is the SOSS 416 hinge fire rated, and for how long?
It carries a UL label, and the rating depends entirely on what the door is made of. On hollow metal, sheet metal, tin clad, and steel composite doors and frames it is rated up to and including 3 hours (180 minutes). On wood core doors and frames the rating is 20 minutes. On wood or plastic composite doors built with Georgia Pacific FS 1 or FS 2 banding it goes up to and including 90 minutes. If you are specifying to a 90 minute wood opening, the banding is the deciding detail.
3) Does an invisible hinge like the SOSS 416 let the door open all the way, or does it stop short?
Full 180 degrees, single action. The hinge body disappears into the mortise when the door is shut, so there are no knuckles on the edge, and it still swings back flat. If you need to check swing clearance against an adjacent wall or a cased jamb before you cut the pockets, SOSS publishes clearance, 90 degree open, and cased jamb detail drawings for the 416.
4) Do I need to buy screws separately for a SOSS 416 invisible hinge?
No, both wood and machine screws come in the box, so the same hinge covers a wood door and a hollow metal one without a second trip to the supply house. What you do need on your side is the router template work: the 416 mortises into both the door edge and the jamb, and SOSS publishes a hinge location drawing that gives the layout.
5) What size is the SOSS 416 hinge and what corner style does it have?
The 416 is the 4-5/8 inch body size, which is the full size entry door hinge in the invisible line, and it has 5/8 inch radius rounded corners. That corner radius matters when you are routing: your template and router bit have to match the radius or you will be chiseling the pocket corners square by hand.
6) Can I use the SOSS 416 with an electric strike or transfer power through it to the door?
No. The 416 is a mechanical hinge with no power transfer and no electrified option, so any power going to the door (electric lock, exit device, card reader) has to run through a separate electric power transfer or a door loop. It also has no built in closer, so a fire rated opening needs a separate self closing device to meet the door assembly requirement.
7) What finishes does the SOSS 416 invisible hinge come in?
Two: 626 satin chrome, and unplated. Since the hinge is fully concealed when the door is closed, finish is only visible on the leaf edges when the door stands open, which is why unplated is a common pick on painted or industrial openings and 626 on doors where the edge shows.
8) Are the screw holes on the SOSS 416 counterbored?
They are not counterbored, so the supplied screws seat in plain holes rather than dropping below the leaf face. Worth knowing before you route, because a pocket cut for a counterbored hinge leaf will not seat this one the way you expect.
How fast can I get the SOSS 416US26D 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 SOSS 416US26D come with a warranty?
Absolutely. The SOSS 416US26D 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 SOSS 416US26D?
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 SOSS 416US26D 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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