SOSS 420IC Invisible Closer Hi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$531.81
$466.00
SOSS 420IC Invisible Closer Hinge for 2" Metal Doors

SOSS 420IC Invisible Closer Hinge for 2" Metal Doors

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Model: 420IC-US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$531.81
$466.00
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SOSS 420IC Invisible Closer Hinge for 2" Metal Doors

The SOSS 420IC Invisible Closer Hinge is engineered for metal doors that are 2" thick, delivering a door closer that remains completely concealed from either side when the door is closed. Constructed from alloy steel materials, this heavy-duty spring hinge from the 420 Series opens a full 180° as a single-action hinge and features a closure rate that is fully adjustable with an allen wrench after installation — no removal required. It can be installed inside the door itself or inside the door jamb, and is Underwriters Laboratories labeled for use on hollow metal, sheet metal, tin clad, and steel composite swinging type fire doors and frames with a 3 hour rating, as well as wood core doors and frames rated up to 20 minutes.

Key Features

  • Door Thickness Compatibility: Designed specifically for 2" thick metal doors for a precise, secure fit.
  • Product Size: 4-1/2" hinge size suited for full-sized entry doors in metal and wood.
  • Heavy-Duty Construction: Made of alloy steel, zinc and steel materials for long-term commercial durability.
  • Fully Adjustable Closure Rate: Closure speed can be adjusted with an allen wrench after installation without removing the closer.
  • Invisible Design: Totally concealed from either side of the door when closed, preserving clean sightlines.
  • 180° Single-Action Operation: Opens a full 180° as a single action hinge for versatile door swing.
  • Flexible Installation: Can be installed inside the door itself or inside the door jamb; machine screws are included.
  • Fire Rated Performance: UL labeled for use on hollow metal, sheet metal, tin clad, and steel composite fire doors and frames rated up to 3 hours, and wood core doors and frames rated up to 20 minutes.

Certifications & Compliance

  • Underwriters Laboratories (UL) Labeled
  • 3 Hour Fire Rating on Hollow Metal, Sheet Metal, Tin Clad, and Steel Composite Fire Doors and Frames
  • 20 Minute Rating on Wood Core Doors and Frames

Technical Specifications

  • Product Group: Door Hinges and Pivots
  • Series: 420 Series
  • Subcategory: Spring Hinges
  • Product Subgroup: Concealed Hinges
  • Commercial/Residential: Commercial
  • Duty Level: Heavy Duty
  • Electronic: No
  • Corner Type: Square
  • Product Function: Spring Hinges
  • Product Size: 4-1/2"
  • Product Category: Door Hinges and Pivots
  • Product Substrate: Zinc and Steel
  • Department: Door Hardware
  • Application: Full Sized Entry, Metal, Wood
  • Min. Material Thickness: 2″
  • Fire Rating: 3 Hour
  • Power Transfer: No
  • Closer: Yes
  • Counter Bored Screw Holes: No
  • Screws Included: 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 420IC?

SOSS 420IC hinges combine alloy steel and zinc and steel construction with UL-labeled fire door performance rated up to 3 hours on metal doors and 20 minutes on wood core doors, delivering heavy-duty reliability for demanding commercial applications. The fully concealed, field-adjustable design ensures dependable, single-action 180° operation while maintaining a clean, invisible appearance on both sides of the door.

Manufacturer Resources

SOSS420IC Model

Product Specs

Product Group:
Door Hinges and Pivots
Series:
420 Series
Product Type:
Invisible Hinges
Subcategory:
Spring Hinges
Product Subgroup:
Concealed Hinges
Commercial/Residential:
Commercial
Duty Level:
Heavy Duty
Electronic:
No
Corner Type:
Square
Product Function:
Spring Hinges
Product Size:
4-1/2"
Product Category:
Door Hinges and Pivots
Product Substrate:
Zinc and Steel
Department:
Door Hardware

SOSS 420IC-US26D – Frequently Asked Questions

1) Will the SOSS 420IC invisible closer work on a 1-3/4 inch metal door?
No. The 420IC is built for 2 inch thick metal doors, and the minimum material thickness is 2 inches. On a standard 1-3/4 inch commercial door the pocket depth isn't there, so you need a thinner-door model from the SOSS invisible closer line instead.
2) Can a SOSS 420IC be used on a fire rated opening?
Yes. It's Underwriters Laboratories labeled for hollow metal, sheet metal, tin clad and steel composite swinging fire doors and frames with a 3 hour rating, and for wood core doors and frames rated up to 20 minutes. That covers most stair, corridor and tenant separation openings where a surface closer isn't wanted.
3) Can you adjust the closing speed after the SOSS 420IC is installed?
Yes, with an allen wrench, and the closer does not have to come out of the door to do it. That matters on a punch list where several openings need to be dialed in after the doors are hung.
4) Does the SOSS 420IC mount in the door or in the frame?
Either. The 420IC can be routed into the door itself or into the jamb, which helps when the door leaf is already crowded with lock or exit device prep. Machine screws come with it, and the corner prep is square.
5) How far will a door on SOSS 420IC invisible hinges swing open?
A full 180 degrees, single action, so the leaf swings one direction only. If you need a door that swings both ways, this isn't the hinge for it.
6) Is the SOSS 420IC a hinge, a closer, or both, and do I still need regular hinges?
It's both in one body: a concealed spring hinge that also closes the door, from the SOSS 420 Series. It is a 4-1/2 inch size unit. On a full size entry leaf it works alongside additional invisible hinges carrying the weight of the door, with the 420IC providing the closing force, so plan the opening for more than the one unit.
7) Does the SOSS 420IC support electric strikes or card readers through the hinge?
No. The 420IC is a mechanical unit with no electronic option and no power transfer through it. If you need power to the leaf for an electrified lock or exit device, run it through a separate electric power transfer or an electrified hinge.
8) Why choose an invisible closer like the SOSS 420IC over a surface mounted door closer?
Sightlines and tamper exposure. The 420IC is completely hidden from both sides when the door is shut, so there's no arm or body on the face of the leaf to get vandalized, painted around, or clash with a design intent. The tradeoff is prep: a surface closer screws onto a finished door, while the 420IC needs a routed pocket in the door or jamb and is specific to 2 inch metal leaves.
9) What finishes does the SOSS 420IC come in, and will they match the rest of my door hardware?
Five choices: 619 satin nickel, 626 satin chrome, 606 satin brass, alloy steel black e-coated, and UNP unplated. 626 and 619 are the usual matches for commercial lever and exit hardware. Since the closer is concealed when the door is shut, finish mainly matters for the edge of the leaf when the door stands open.
10) How is the SOSS 420IC packaged and sold?
Each. One unit per box, one box per container, priced per each, with machine screws in the carton.
How fast can I get the SOSS 420IC-US26D 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 420IC-US26D come with a warranty?
Absolutely. The SOSS 420IC-US26D 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 420IC-US26D?
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 420IC-US26D 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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