Sliding Track Arm Hidden Door Closer , Silent Overhead Concealed Door Closer

Sliding Track Arm Hidden Door Closer , Silent Overhead Concealed Door Closer

• Skilled Craft: even operation, oil tight, noiseless
• Closing & latching speed adjusted by two valves
• ISO9001:2015 certification | Exporting since 2011

Dorrenhaus overhead concealed door closer D20, is of hidden type, will be

mounted inside the door and will not be visible while the door is completely

shut. Compare with surface mounted door closer, It's hard to install.

Usually it's better for building project specially for room door of hotel,

restaurant or similar public building.

Ω Overhead conealed door closer, light duty for hotel room door

Ω Aluminum hidden track arm with optional hold open device

Ω Slim body with 28mm thickness, min. door thickness of 40mm

Ω Non-handed installation, designed for universal application

Ω Meet requirements of UL 228 standard, tested life cycles 150,000+

Ω Casting aluminum body with anodized aluminum sliding track arm

Ω Fixed spring force #2, suitable for max. 850mm door width

► Trusted cooperative manufacturer of global first-rate security trade mark

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

* GENTLE, NO MANUAL CLOSING: the door will closer by itself, enjoy self-acting

closing and locking, keep quiet and safety.

* SPRING THRUST, EASY CLOSING: the commercial-grade arm won’t interfere with

opening, while closing doors slowly enough to allow graceful entrance and exit

------------ 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.