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Door Hinges > Part #: 420UNP
SKU #: RVW1038

SOSS Invisible/Concealed Single Door Hinge

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SOSS Invisible/Concealed Single Door Hinge

Soss now offers a complete line of fire rated invisible hinges. Whatever the door or opening, there is a Soss hinge for you. Whether your doorway is made of wood or metal, rated 20 minutes or 3 hours, there now is a Soss fire rated hinge that will comply and still give you the "uniquely invisible" hinge that you expect from Soss


  • Matl. Thickness of 2", 90/180 min UL Fire Rating, 1 each
  • Additionally, they can be used on wood core doors
  • Specifically designed with square edges for metal doors
  • Use at least one fire-rated hinge for every 20" of door height
  • Used on hollow metal, sheet metal, tin clad and steel composite swinging type fire doors
  • Not to be used on a door that normally is held open
  • One hinge for every 60 lbs
  • Frames rated up to and including 3 hours

Product Details:

  • Hinge Type: Invisible/Concealed
  • Number of Mounting Holes: 8

Special Offer:

24 Issues of Better Homes and Gardens

Included with purchase ($10 value). 

SOSS Invisible/Concealed Single Door Hinge

Weights & Dimensions

  • Minimum Compatible Door Thickness: 2"
  • Maximum Compatible Door Thickness: 2"
  • Overall Product Weight: 3.85lbs


Hinge Type: Invisible/ConcealedStyle: Contemporary
Primary Material: Other
  • Primary Material Details: Steel
Fire Resistant: Yes
Number of Mounting Holes: 8Country of Manufacture: Singapore


UL Listed: Yes 

About the Manufacturer

The real story behind closed doors. A best seller! At last...Go where your imagination will take you. Create superlative environments unencumbered with unsightly hardware. Generate clean, contemporary planes. Blend smooth, flush surfaces. Shape unsurpassed beauty. Do what you've always wanted to do...tile, parquet and mirrored doors...unique wood designs...elegant counter tops with lift panels...distinctive bookcases and cabinetry. For those office spaces where looks are everything. And with beauty there's strength! A hinge so exceptionally constructed...so firmly anchored in a deep, full mortise...it can hold a 500-pound door. And with strength there's security! Peace of mind security because this hinge can't be seen; it cannot be tampered with. It helps you to create an environment that is both unique and beautiful. A vast range of sizes and styles provide architects, cabinet makers, builders and manufacturers with multi-functional versatility and adaptability. It opens the door to a myriad of design opportunities in wood, metal and plastic. The SOSS catalog offers the specifier complete information on the entire SOSS Hinge family as well as proper hinge selection and installation information. Engineering consultation available. An electronic CD-ROM version of the SOSS catalog is available at no charge. Beautiful when open, Invisible when closed.


The Invisible/Concealed Single Door Hinge is a Contemporary style product. Contemporary style bridges the gap between traditional and modern. Pieces feature simple and clean lines with smooth surfaces without any carving or adornment. You can shop for more Contemporary Door Hinges in the Home Improvement section of our site.

SOSS Invisible/Concealed Single Door Hinge

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    When you buy a SOSS Invisible/Concealed Single Door Hinge online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the SOSS Part #: 420 here. If you have any questions about your purchase or any other Door Hinges product for sale our customer service representatives are available to help.Whether you just want to buy a SOSS Invisible/Concealed Single Door Hinge or shop for your entire home, Wayfair has a zillion things home.
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    Description: Material: Alloy / Stainless Steel Matl. Thickness of 1 3/8", 90/180 min UL Fire Rating, 1 each
    Description: Features: Matl. Thickness of 1 1/8", 1 each. Can hold a 500 pound door. For wood or metal applications. Can't be tampered with. Vast range of sizes and styles provide architects, cabinet makers, builders. Hinge so exceptionally constructed. Peace of ...


    OUR SKU # RVW1038

    Invisible/Concealed Single Door Hinge is also sometimes listed under the following manufacturer numbers: 420SSUS32, 420SSUS32D, 420UNP, 420US15, 420US19, 420US26D, 420US4