Folding Door Invisible Spring Adjustable Soss Hinges Zinc Alloy 35mm Thickness

The Invisible Spring Hinge gives you a spring closer that is totally invisible from either side when the door is closed. When the door is open, you see only the hinge face and links.

The closure rate is Non-adjustable, and does not require removal of the spring closer. Installation can be either inside the door itself or inside the door jamb. Allow one spring closer for each 75 lbs. of door weight for all spring closers.

When open less than 90 degree, the door will self closing back, when open more than 90°, the door will self open to 180°.

Made from high strength casting SUS 304.

Beautiful when open...Invisible when closed. Soss Mortise Mount Invisible hinges for designed to provide security, strength and safety.

Invisible Spring Hinge Features:

Invisible spring hinges are perfect for applications where a flush fit, smooth operation, and a compact size are necessary features, as well as being concealed from view.

When closed, hinge cannot be seen or tampered with;

When open, hinge appears compact and elegant;

180 degree opening angle for easy access;

Multilayer link construction reduces friction for a smooth free hinge operation;

Many sizes and finishes available as special orders.

Our High Quality Invisible Spring Hinge model # CG007 is for use in metal or wood applications. This full size door hinge will provide superior appearance and durability. These hinges are used where compact size, smooth operation, and flush fit are necessary Concealed Hinges open a full 180° and are a single action hinge. Multiple Finishes Available!

The Underwriters Laboratories labeled the model #CG007 Invisible Spring Hinge can be used on hollow metal, sheet metal, tin clad, steel composite or wood core swinging type fire doors and frames with a 90 minute rating.

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.

Queations you may ask:

1, Samples' free or charged including the express cost?

Samples' cost less than USD 50.00 will not be charged, express cost on customer's side.

2, Factory area and number of employees?

5000 ㎡&100 workers

3, Delivery time for regular orders?

We always keep s small amount of stock(around 1000 pcs for each sizes), and for mass orders, certainly finish from 15 days up to 30 days.

4, Your capacity for one month?

Up to 500,000 pcs accoding to different sizes.

5, Your annual sales value?

In 2017, exceed 6 million dollars.

6, How will you treat on after-sale quality problems?

If responsibility confirmed on our side, we will make full compensation for free including shipping charge.

Real photos in Satin finish: