Overhead Residential Door Closer Size 4 Medium Duty Auto Close 85kg Door Weight

Overhead Residential Door Closer Size 4 Medium Duty Auto Close 85kg Door Weight

Dorrenhaus - CE- and UL-certified | Exporting since 2011

1. Overhead Residential Door Closer D604 Medium Duty for 85kg Door

2. Fixed size 4, suitable for medium working frequency, such as office of

mansion building, meeting room, school, chamber or club etc;

3. Key Features: 1688 Hot-sale Model, Meet Chinese National Standard

4. Suitable for Regular Arm, Top Jamb non-handed overhead mounting

5. Material: precise cast aluminum closer housing with steel rocking arm

6. Structure: rack and pinion type, powder bearing, high tensile

7. Durable hydraulic fluid for all weather operation and continuing lubrication.

8. Comply with QB/T 2698-2005 Grade 2 requirement, tested life cycles of

200,000 plus, Investigated to standard GA 93-2004, designed to be used

with Door Closer for Fireproof Door rated up to and including 2 hours

9. Appearance: square shape, Moderate Dimension, elegance and graceful

10. Auto close and latch speed adjustable by dual separate regulating screws

► Long-term cooperative partner of world's first-rate door closer enterprises

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

* SPRING THRUST, EASY CLOSING: the steel rocking arm will not impact opening,

while closing doors slowly enough to allow graceful entrance and exit

* CONSUMMATE CRAFTSMANSHIP: smooth running, oil tight and noiseless

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

closing and locking, keep quiet and safety.

           ------------ 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.