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SOSS 216 Series 4-5/8" Invisible Hinge (1-3/8" Minimum Door Thickness)
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SOSS® Invisible Hinge model #218 is for use in wood or metal applications that are 1-3/4″ to 2″ thick. The model #218 is made of zinc and steel materials. Nylon links add strength and durability. This full size door style hinge will provide superior appearance and durability. Our Hinges are found in many applications where flush fit, compact size and smooth operation are necessary features. SOSS® Invisible Hinges open a full 180° and are a single action hinge.
Now with a 20 Minute UL Fire rating!
The Underwriters Laboratories labeled the model #218 SOSS® Invisible Hinge can be used on hollow metal, sheet metal, tin clad, steel composite or wood core swinging type fire doors and frames with a 20 minute rating.
For fire rated doors: Use at least one fire-rated hinge for every 20″ of door height or portion thereof, or one hinge for every 60 lbs. or fraction thereof, whichever calculation demand more hinges.
Wood and machine screws are included.
| Application | Full Sized Entry, Metal, Wood |
|---|---|
| Min. Material Thickness | 1-3/4″ |
| Fire Rating | 20 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 |
Manufacturer Resources
SOSS218 Hinge Location
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:
- Heavy Duty
- Electronic:
- No
- Corner Type:
- Radius
- Series:
- 218 Series
- Collection:
- 218 Series
- Product Function:
- Invisible Hinges
- Product Size:
- 4-5/8"
- Product Category:
- Door Hinges and Pivots
- Product Substrate:
- Zinc and Steel
SOSS 218US26D – Frequently Asked Questions
1) What door thickness does this invisible hinge require?
This hinge requires a minimum 1-3/4 inch door thickness. Standard residential doors at 1-3/8 inch will not work with this heavy-duty invisible hinge.
2) How much weight can this 4-5/8 inch invisible hinge support?
This industrial-grade invisible hinge supports heavy commercial doors. Check manufacturer specifications for exact weight ratings based on your door material and size.
3) Does this hinge work with left and right hand doors?
Yes, this invisible hinge adjusts for both left and right hand door applications. The concealed design works with standard handing configurations.
4) What does the US26D finish look like?
US26D is satin chrome finish. It provides a brushed, non-reflective appearance that resists fingerprints and matches other satin chrome hardware.
5) Where are invisible hinges typically used?
Invisible hinges work best on heavy commercial doors, security doors, and high-end architectural applications where concealed hardware is required for clean aesthetics.
6) How many invisible hinges do I need per door?
Most heavy doors require 2-3 invisible hinges depending on door weight and height. Consult manufacturer guidelines for your specific door specifications.
7) What tools are needed for invisible hinge installation?
Installation requires precise mortising tools, drill bits, chisels, and routing equipment. Follow manufacturer templates exactly for proper alignment and operation.
8) Can this hinge be field adjusted after installation?
Some adjustment is possible but limited compared to standard hinges. Precise initial installation is critical for proper long-term operation.
9) Do invisible hinges require special maintenance?
Clean periodically with mild soap and water. Lubricate pivot points annually with light machine oil. Avoid harsh cleaners that can damage the satin chrome finish.
10) Are there other sizes available in the 218 series?
The 218 series includes multiple sizes for different door applications. Check our hinges section for other invisible hinge options.
11) What door frame preparation is required?
Both door and frame require precise mortising to manufacturer specifications. Frame must be plumb and square for proper hinge operation and door alignment.
How fast can I get the SOSS 218US26D 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 218US26D come with a warranty?
Absolutely. The SOSS 218US26D 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 218US26D?
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 218US26D 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.