Light Duty Automatic Sliding Door Closer Overhead Hydraulic Open Angle 120 Degree

Light Duty Automatic Sliding Door Closer Overhead Hydraulic Open Angle 120 Degree

• Lightest and smallest sliding arm door closer for home
• Dorrenhaus - Focusing on manufacturing door closers
• Smooth operation, no oil leakage and abnormal sound

Dorrenhaus automatic door closer D303SH with sliding arm is of size 3 spring power,
compared with the regular arm and top jamb overhead mounting methods, its power
efficiency is the lowest, approximately 50% less, i.e. only size 2 closing force.

1. Material: casting aluminum closer shell, anodized aluminum sliding track arm
2. Double Valves Controls Closing and Latching speed separately after installation.
3. With UL Certified Aluminum Door Closer Body, Light Duty and Small Size
4. Core Competitive Superiority: Chinese style, China’s biggest sell model
5. Fuchs Brand Lubricants especially for qualified door closer constant lubrication.
6. Closer Appearance: Square and smaller body, Classic and Gracious
7. Hydraulic Structure: powder bearing, rack and pinion type door closer
8. Popular model suitable for light duty interior applications, such as School Janitor
Closet or Residential Restroom Door etc.
9. Properties of product and tested life cycles meet UL 228 standard, life cycles of
200,000 plus

► 7 years cooperative manufacturer of world's famous security trade mark


Finishes: Painted - Silver, Bronze, White, Gold, Black, Brown

* SPRING THRUST, EASY CLOSING: aluminum sliding track arm will not impact opening,
meanwhile shut doors gradually to allow for graceful extry and exit
* SOFT, NO NEED TO CLOSE MANUALLY: allow the door do the work, enjoy self-driven
closing and latching, maintain quiet and security.

------------ Our Advantages ------------

1. Only produce door closer, annual output 1.5-2.0mils pcs.

2. UL & CE certification, max. Life cycle test of 5 mil. Cycles.

3. Pass European & China ISO9001:2015 QMS Certification.

4. Mainly for export market since foundation in October, 2011.

5. Long term cooperative supplier of world’s top security brands.

A High-end Germany Gating Hardware Brand

Originally founded in 1872, Dorrenhaus is a high-end Germany gating hardware brand. At the beginning of 1980's,

Dorrenhaus entered into Chinese market, and supplied numerous households in China with high quality hardware products.

On October 10, 2011, Dorrenhaus's door closer manufacturing base in China - Zhejiang Dorrenhaus Hardware Industry Co.

Ltd was formally founded. All members of management team have more than 15 years of experience in door closer industry.

Marketing Under Dorrenhaus and DORHAUS Brand

In 2017, our new trademark - DORHAUS was registered. We have $3 million registered capital. Our main products include

hydraulic door closers, automatic door closers, concealed door closers, commercial door closers, fire door closers, auto door

closers, sliding door closers, heavy duty door closers, overhead door closers, UL-listed door closers and door closer parts.

We have 205 total number of employees, which includes seven R&D staff and 13 quality control staff in our

15,000-square-meter factory.

Exporting Products Worldwide

Now, we have six complete production lines with annual output of 1.5 to 2.0 million sets. We export our products to more than

20 countries in North America, Europe, Russia, the Middle East and Southeast Asia. We passed the certification for EN ISO

9001:2008 quality management system in 2014, and ISO9001:2015 in 2017 respectively.

Our products passed many international and domestic certification and standard, such as:

American National Standard: ANSI 156.4 Grade 1, life cycle test of 2mil cycles

American UL228 and UL 10C for 3 hours fire testing

European Standard CE: EN1154, life cycle test of 500,000 cycles

European Standard CE: EN1634 fire testing

China National Standard: QB/T 2698-2005 Grade 1, life cycle test of 1 mil. cycles

China Compulsory Product Certification for fire rated door closer

Cooperate with Us Today

For more detailed information regarding our business, contact us today.