SOSS 220AS Invisible Hinge, 5-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$362.82
$303.57
SOSS 220AS Invisible Hinge, 5-1/2" Alloy Steel with Fire Rating for 2" Minimum Door Thickness

SOSS 220AS Invisible Hinge, 5-1/2" Alloy Steel with Fire Rating for 2" Minimum Door Thickness

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Model: 220ASUS26D
From the 220 Series Collection
Selected Finish is

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

$362.82
$303.57
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SOSS 220AS Invisible Hinge, 5-1/2" Alloy Steel with Fire Rating for 2" Minimum Door Thickness

The SOSS 220AS Invisible Hinge is a full-size, 5-1/2" concealed hinge constructed of alloy steel and designed for wood or metal door applications with a 2" minimum material thickness. This single-action hinge opens a full 180° and is Underwriters Laboratories labeled for use on hollow metal, sheet metal, tin clad, and steel composite swinging fire doors and frames rated up to and including 3 hours, wood core doors and frames rated 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. Wood and machine screws are included for installation.

Key Features

  • Door Thickness Compatibility: Designed for wood or metal doors with a 2" minimum material thickness for full-size entry applications.
  • Full Sized Hinge: Measures 5-1/2" for use on full-size entry doors in metal or wood construction.
  • Heavy-Duty Construction: Made of alloy steel for superior appearance and durability in demanding commercial applications.
  • Full 180° Operation: Single action hinge design allows the door to open a full 180 degrees for versatile installation.
  • Fire Door Compatibility: 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, wood core doors and frames rated up to 20 minutes, and wood/plastic composite doors with Georgia Pacific FS 1 or FS 2 banding rated up to and including 90 minutes.
  • Included Hardware: Wood and machine screws are included for straightforward installation without sourcing additional fasteners.
  • Fire-Rated Hinge Placement Guidance: Use at least one fire-rated hinge for every 20" of door height or portion thereof, or one hinge for every 60 lbs. of door weight or fraction thereof, whichever calculation demands more hinges.
  • Concealed Design: Invisible hinge construction provides a flush fit and compact size for applications where smooth operation and clean appearance are required.

Certifications & Compliance

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

Technical Specifications

  • Subcategory: Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Subgroup: Concealed Hinges
  • Commercial/Residential: Commercial
  • Duty Level: Heavy Duty
  • Electronic: No
  • Corner Type: Radius
  • Series: 220 Series
  • Collection: 220 Series
  • Product Size: 5-1/2"
  • Product Category: Door Hinges and Pivots
  • Department: Door Hardware
  • Application: Full Sized Entry, Metal, Wood
  • Min. Material Thickness: 2″
  • 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 220 Series?

SOSS 220 Series hinges deliver professional-grade reliability through alloy steel construction and UL-labeled fire ratings for demanding commercial door applications. The full 180° single-action operation combined with a concealed, flush-fit design makes this hinge a dependable choice where appearance, durability, and smooth function are all essential.

Product Specs

Subcategory:
Hinges and Pivots
Product Group:
Door Hinges and Pivots
Product Type:
Invisible Hinges
Product Subgroup:
Concealed Hinges
Commercial/Residential:
Commercial
Duty Level:
Heavy Duty
Electronic:
No
Corner Type:
Radius
Series:
220 Series
Collection:
220 Series
Product Function:
Invisible Hinges
Product Size:
5-1/2"
Product Category:
Door Hinges and Pivots
Product Substrate:
Alloy Steel
Department:
Door Hardware

SOSS 220ASUS26D – Frequently Asked Questions

1) Will the SOSS 220AS invisible hinge work on a 1-3/4 inch door?
No. The 220AS requires a 2 inch minimum material thickness in the door and jamb, so a standard 1-3/4 inch commercial door is too thin for it. It's a full-size 5-1/2 inch hinge meant for heavy entry doors of that thickness or greater in wood or metal. If your door is 1-3/4 inch, you need a smaller SOSS invisible hinge sized for that thickness rather than this one.
2) What fire rating does the SOSS 220AS carry, and does it depend on the door?
The rating follows the door construction. UL labeled for hollow metal, sheet metal, tin clad and steel composite swinging fire doors and frames rated up to and including 3 hours; wood core doors and frames up to 20 minutes; and wood/plastic composite doors built with Georgia Pacific FS 1 or FS 2 banding up to and including 90 minutes. So a 90 minute wood opening only qualifies if the door carries that FS 1 or FS 2 banding.
3) Do SOSS invisible hinges let a door swing all the way back to the wall?
The 220AS is a single action hinge that opens a full 180 degrees. Because the hinge body is mortised into the edge of the door and the jamb, nothing protrudes into the opening when the door is closed. SOSS publishes a clearance detail and a 90 degree open detail for the 220 series if you need to check swing clearance against adjacent trim or a return wall before you rout the pockets.
4) Do I need to buy screws separately for the SOSS 220AS?
No, both wood screws and machine screws ship with the hinge, so it covers a wood door or a metal frame without a separate fastener order. What is not included is the routing work: each hinge needs a mortise pocket cut into the door edge and the jamb, and SOSS publishes a hinge location drawing and a cased jamb detail for laying that out.
5) Is the SOSS 220AS handed? Do I order left or right?
No handing to specify. The 220AS is a symmetrical concealed hinge that works on either swing, so you order by size and finish only. The one decision that matters at order time is quantity, since the fire-rated hinge count is driven by door height and weight.
6) Can the SOSS 220AS carry power to an electrified lock or exit device?
No. The 220AS is a mechanical hinge with no electric through-wire and no power transfer capability, and it has no built-in closer. If the opening needs power at the door leaf, plan on a separate electric power transfer device or an electrified hinge, and a surface or concealed closer for closing force.
7) What finish does the SOSS 220AS come in, and does the finish even show once installed?
It's supplied in 626 satin chrome. On a closed door you see essentially nothing, since the hinge is fully concealed in the mortise; the finish shows only on the exposed leaf edges when the door swings open, and 626 reads as a neutral brushed silver next to most commercial lever and closer hardware.
8) Is an alloy steel invisible hinge heavy duty enough for a high traffic commercial opening?
Yes. The 220AS is built from alloy steel and rated heavy duty for commercial use, which is why it's specified on office, school, healthcare, retail, industrial and government openings where a butt hinge would be visible. The corners are radiused, and at 5-1/2 inches it's the full-size body intended for entry doors rather than a cabinet or light interior door.
9) How is the SOSS 220AS packaged, one hinge or a pair?
Each box is one hinge, priced and sold individually, not as a pair. Order the full quantity your door height and weight calculation calls for rather than assuming a box covers two leaves.
How fast can I get the SOSS 220ASUS26D 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 220ASUS26D come with a warranty?
Absolutely. The SOSS 220ASUS26D 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 220ASUS26D?
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 220ASUS26D 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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