SOSS 212 Series Invisible Hing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$42.44
$37.32
SOSS 212 Series Invisible Hinge for 1-1/8" to 1-3/8" Wood or Metal Doors

SOSS 212 Series Invisible Hinge for 1-1/8" to 1-3/8" Wood or Metal Doors

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Model: 212US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$42.44
$37.32
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SOSS 212 Series Invisible Hinge for 1-1/8" to 1-3/8" Wood or Metal Doors

The SOSS 212 Series Invisible Hinge is engineered for wood or metal door applications with a material thickness of 1-1/8" to 1-3/8". Constructed from durable zinc and steel with nylon links for added strength, this mid-range invisible hinge opens a full 180° as a single action hinge, delivering smooth operation and a completely concealed appearance when the door is closed. Ideal where flush fit, compact size, and reliable performance are required.

Key Features

  • Material Thickness Compatibility: Designed for wood or metal doors measuring 1-1/8" to 1-3/8" thick, with a minimum material thickness of 1-1/8".
  • Full 180° Operation: Single action hinge design allows the door to swing a complete 180° for versatile installation scenarios.
  • Durable Construction: Made of zinc and steel materials for long-lasting performance in commercial door applications.
  • Nylon Link Reinforcement: Nylon links provide added strength and durability to the hinge mechanism over repeated use.
  • Concealed, Flush-Fit Design: Fully invisible when the door is closed, offering superior appearance for applications where a clean, seamless look is desired.
  • Radius Corner Type: Features a radius corner design compatible with standard door preparation.
  • Included Hardware: Wood screws are included; machine screws are available for an additional charge, offering flexibility for different installation needs.
  • Compact Product Size: Overall product size of 3-3/4" fits standard door preparation templates for this series.

Technical Specifications

  • Subcategory: Hinges and Pivots
  • Commercial/Residential: Commercial
  • Product Group: Door Hinges and Pivots
  • Product Type: Hinges and Pivots
  • Duty Level: Medium Duty
  • Electronic: No
  • Corner Type: Radius
  • Series: 212 Series
  • Product Size: 3-3/4"
  • Product Category: Door Hinges and Pivots
  • Department: Door Hardware
  • Application: Metal, Wood
  • Min. Material Thickness: 1-1/8″
  • Fire Rating: No
  • Power Transfer: No
  • Closer: No
  • Counter Bored Screw Holes: No
  • Screws Included: Wood
  • Packaging: 1 / Box = 1 Each
  • Packages Per Container: 1 Each
  • Price Per: Each

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Cabinetry and Millwork Requiring Concealed Hinges

Why SOSS 212?

The SOSS 212 Series Invisible Hinge combines zinc and steel construction with reinforced nylon links to deliver dependable, smooth operation across thousands of door cycles. Its fully concealed, flush-fit design makes it a preferred choice for medium-duty commercial applications where appearance and function must work together seamlessly.

Product Specs

Subcategory:
Hinges and Pivots
Commercial/Residential:
Commercial
Product Group:
Door Hinges and Pivots
Product Type:
Hinges and Pivots
Product Subgroup:
Invisible Hinges
Duty Level:
Medium Duty
Electronic:
No
Corner Type:
Radius
Series:
212 Series
Product Function:
Invisible Hinges
Product Size:
3-3/4"
Product Category:
Door Hinges and Pivots
Product Substrate:
Zinc and Steel
Department:
Door Hardware

SOSS 212US26D – Frequently Asked Questions

1) Will the SOSS 212 invisible hinge work on a 1-3/4 inch door?
No. The 212 Series invisible hinge is built for wood or metal material 1-1/8 to 1-3/8 inches thick, and 1-1/8 inches is the minimum it will take. A 1-3/4 inch slab, which is the usual commercial door thickness, is outside that range, and you need a larger SOSS invisible hinge sized for thicker material. Measure the actual leaf thickness before you order, not the frame opening.
2) Can I put SOSS 212 invisible hinges on a fire rated door?
The 212 Series carries no fire rating, so it does not belong on a rated opening. Corridor doors, stair doors, and anything with a label on the frame need a hinge carrying its own fire rating to keep the assembly compliant. Use the 212 on non-rated interior and millwork openings, where the concealed look is the reason you are specifying it in the first place.
3) Do SOSS 212 invisible hinges come with the right screws for a hollow metal door?
Wood screws ship with the 212 hinge. Machine screws for metal doors and frames are a separate add at extra cost, so if you are hanging hollow metal you have to specify them on the order or you will open the box with fasteners that will not hold. The hinge itself is approved for both metal and wood material in the 1-1/8 to 1-3/8 inch range, so it is only the fastener you need to sort out.
4) Can SOSS 212 invisible hinges be used on 3/4 inch cabinet doors?
No. The 212 needs at least 1-1/8 inches of material to mortise into, so a standard 3/4 inch cabinet door is too thin and the pocket would blow through the face. It works on thick millwork, panel, and jib doors that hit 1-1/8 to 1-3/8 inches. For thinner cabinet stock you want a concealed cabinet hinge, not an invisible door hinge.
5) What mortise prep does the SOSS 212 need, and do the corners have to be squared out?
The 212 is a radius corner hinge, so the pocket stays exactly as a router and template leave it. No chiseling the corners square in the door edge or the jamb. Size the pocket for a 3-3/4 inch hinge, and cut matched pockets in the door and the frame since an invisible hinge mortises into both halves of the opening.
6) Are SOSS 212 hinges sold in pairs or individually?
Each 212 invisible hinge is packaged and sold one to a box, one each. Count your openings, decide how many hinges each door carries, and order that total quantity of hinges, not that number of pairs. Screws come with each hinge as wood screws.
7) Will an invisible hinge let the door swing both directions?
Not the SOSS 212. It is a single action hinge, meaning the door swings one direction only, through a full 180 degrees, so the leaf can lay back flat against the wall face rather than stopping at 90. If you need a door that pushes both ways, a single action invisible hinge is the wrong choice and you want a double acting pivot instead.
8) I already have invisible hinges in these doors. Can I drop 212s into the existing mortises?
Only if the existing pocket matches. The 212 is a 3-3/4 inch invisible hinge with radius corners, cut for material 1-1/8 to 1-3/8 inches thick. Pull one of the old hinges, measure the pocket length and the door thickness, and if both line up the swap is direct. A pocket cut for a different size hinge means patching and re-routing, which on a finished door is more work than it sounds.
9) Are SOSS 212 invisible hinges durable enough for apartment and office doors?
The 212 is rated medium duty for commercial use, built from zinc and steel with nylon links through the mechanism. That covers tenant unit doors, offices, and interior openings in occupied buildings. For a heavy or oversized leaf, or an opening taking constant public traffic, step up to a heavier invisible hinge rather than pushing a medium duty one.
10) Can a SOSS 212 hinge carry wire for an electrified lock or access control?
No. The 212 is a mechanical hinge with no electronic option and no power transfer through the barrel. Hanging a door with an electric strike, an electrified mortise lock, or a card reader means running the wire some other way, through an electric power transfer hinge or a concealed door loop at the hinge edge, while the 212 handles the swing.
11) What finishes does the SOSS 212 invisible hinge come in, and does the finish even show?
Nine finishes: unplated, oil rubbed bronze lacquered (613L), bright nickel (618), satin nickel (619), matte black (622), bright chrome (625), satin chrome (626), bright brass (605), and satin brass (606). With the door closed the hinge is completely hidden, so the finish only reads when the door is open and you see the leaves in the edge. Match it to the lever and other trim on the opening if the door stands open often; unplated is there for openings where nobody is looking at the hinge edge.
12) Why use an invisible hinge like the SOSS 212 instead of a standard butt hinge?
Two reasons drive the choice. An invisible hinge disappears entirely when the door is closed, which is the point on flush panel walls, jib doors, and millwork where a butt hinge knuckle would break the surface. And it needs no barrel projecting past the door edge, so the door can lay back a full 180 degrees. The tradeoff is prep: a butt hinge screws to a shallow mortise, while the 212 needs a routed pocket in both the door and the jamb, cut for 1-1/8 to 1-3/8 inch material. If the door is already hung and prepped for butts, converting is real millwork.
How fast can I get the SOSS 212US26D 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 212US26D come with a warranty?
Absolutely. The SOSS 212US26D 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 212US26D?
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 212US26D from ZenSupply?
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