SOSS 303 Series Invisible Hing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$30.87
SOSS 303 Series Invisible Hinge, 1-1/2" Steel Construction for Wood or Metal Doors

SOSS 303 Series Invisible Hinge, 1-1/2" Steel Construction for Wood or Metal Doors

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Model: 303CUS26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$30.87
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SOSS 303 Series Invisible Hinge, 1-1/2" Steel Construction for Wood or Metal Doors

The SOSS 303 Series Invisible Hinge from SOSS is a 1-1/2" steel hinge engineered for wood or metal applications with a material thickness of 11/16" to 1". Sold as 1 pair carded, this cabinet-style hinge opens a full 180° as a single action hinge, providing a flush, concealed appearance combined with smooth, reliable operation. Built from zinc and steel, the model #303 delivers superior appearance and durability for applications where compact size and flush fit are essential.

Key Features

  • Compact Size: 1-1/2" hinge size designed for cabinet, wood, and metal door applications requiring a minimum material thickness of 11/16".
  • Full 180° Operation: Single action design allows the door to swing a complete 180 degrees for maximum accessibility.
  • Durable Steel Construction: Made of zinc and steel for long-lasting performance and a superior finished appearance.
  • Invisible, Flush-Fit Design: Concealed mounting provides a clean, seamless look when the door is closed, ideal for applications where appearance matters.
  • Wood Screws Included: Ships complete with wood screws; machine screws are available for an additional charge for alternate installation needs.
  • Versatile Application Range: Suitable for cabinet, metal, and wood applications, offering flexibility across multiple installation types.
  • Convenient Packaging: Packaged 2 per card as 1 pair, with 10 pair per container, and priced per pair for straightforward ordering.

Technical Specifications

  • Subcategory: Hinges and Pivots
  • Commercial/Residential: Commercial
  • Product Group: Door Hinges and Pivots
  • Product Type: Hinges and Pivots
  • Duty Level: Light Duty
  • Electronic: No
  • Corner Type: Radius
  • Series: 303 Series
  • Product Size: 1-1/2"
  • Product Category: Door Hinges and Pivots
  • Product Substrate: Zinc and Steel
  • Department: Door Hardware
  • Application: Cabinet, Metal, Wood
  • Min. Material Thickness: 11/16″
  • Fire Rating: No
  • Power Transfer: No
  • Closer: No
  • Counter Bored Screw Holes: No
  • Screws Included: Wood
  • Packaging: 2 / Card = 1 Pair
  • Packages Per Container: 10 Pair
  • Price Per: Pair

Typical Applications

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

Why SOSS 303?

SOSS 303 Series hinges are built from zinc and steel for dependable, long-term performance in wood, metal, and cabinet applications. The full 180° single action operation and invisible, flush-fit design make this hinge a trusted choice where clean appearance and smooth operation are equally important. Professional-grade construction ensures this hinge meets the demands of commercial installations requiring both durability and aesthetic quality.

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:
Light Duty
Electronic:
No
Corner Type:
Radius
Series:
303 Series
Product Function:
Invisible Hinges
Product Size:
1-1/2"
Product Category:
Door Hinges and Pivots
Product Substrate:
Zinc and Steel
Department:
Door Hardware

SOSS 303CUS26D – Frequently Asked Questions

1) What is the minimum door thickness for a SOSS 303 invisible hinge?
The SOSS 303 is a 1-1/2 inch invisible hinge for wood or metal material 11/16 inch to 1 inch thick, with 11/16 inch the hard minimum. Below that the hinge body has nowhere to seat in the mortise. On a standard 1-3/4 inch commercial door, the 303 is the wrong size and you want a larger SOSS model instead.
2) Does the SOSS 303 invisible hinge need to be specified left or right hand?
No handing to specify. The 303 is a symmetrical single action invisible hinge that mortises into the door edge and the jamb the same way regardless of swing direction, and it opens a full 180 degrees. You pick finish only.
3) Do SOSS 303 hinges come with screws, and are machine screws available for metal doors?
Wood screws ship with the hinge. If you are hanging a metal door or panel, machine screws are available at additional charge and have to be added to the order, they are not in the card. Plan for that on any steel application.
4) Is the SOSS 303 invisible hinge fire rated?
No. The 303 carries no fire rating, so keep it off rated openings and rated cabinet or access door assemblies. On anything in a rated wall or a rated millwork enclosure you need a hinge listed for that assembly.
5) How is the SOSS 303 hinge sold, and how many do I need per door?
Sold and priced by the pair, packaged 2 per card, with 10 pair per container. One pair carries a typical cabinet or panel door; taller or heavier leaves take a third hinge, so order accordingly rather than assuming one card per opening.
6) What finishes does the SOSS 303 invisible hinge come in?
Two: 626 satin chrome and 606 satin brass. Both are BHMA finish designations, so they will read consistently against other 626 or 606 hardware on the same millwork run, which matters when you are matching pulls and catches across a fitout.
7) Will a SOSS 303 hinge let a cabinet door swing back flat against the adjacent face?
Yes, full 180 degrees. Single action design, so the leaf swings out to flat, which is what you need on appliance surrounds and access panels where the door has to clear the opening completely. The hinge itself is invisible when the door is closed.
8) What shape are the SOSS 303 mortise cutouts, radius or square corner?
Radius corners. Route the mortise with a bit matching that radius and the hinge drops in without hand-chiselling square corners, which is the faster method on a production millwork run. A square-corner template will leave gaps at the ends.
9) What is the SOSS 303 hinge made of?
Zinc and steel. That is the trade-off in a concealed hinge this small: enough strength for light duty cabinet and panel work in dry interior settings, not a stainless part for exterior or wet locations.
How fast can I get the SOSS 303CUS26D 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 303CUS26D come with a warranty?
Absolutely. The SOSS 303CUS26D 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 303CUS26D?
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 303CUS26D 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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