Backcheck UL Door Closer Certifire Parallel Arm Mounting For 950mm Width Door

• UL 3-hour fire certification, safety and reliable

• No oil leakage, no abnormal noise, 3 year warranty

• Long-term cooperative suppliers of world's top brands

Hydraulic: The model D703 uses Fuchs lubricating oil instead of ordinary lubrication,

providing smooth operation and more consistent closing. For use with left open or

right hand doors at both pull side or push side, they can be mounted easily. D703

has double separate valves which controls according to the speed you need, to

avoid situation of without locking the door.

1. Core Superiority: US Market Favorite Model, accord with UL 228 Listed
2. Product Surface: Classic American Style, square body, streamlined design
3. Whole process controlled from door opening force to door latching speed
4. Material: cast aluminum closer shell with screw adjustable steel rocking arm
5. Designed for Regular-Arm and Top-Jamb mounting, Parallel Arm optional
6. Product Structure: powder bearing, rack and pinion dual heat treatment
7. Fuchs Lubricating oil specially for smooth and constant closer lubrication
8. Auto closing & latching speed adjustable by two separate regulating valves
9. Automatic Hydraulic Closer Whole Process Force and Speed Controlled
10. Application: best for medium traffic such as School or Store Corridor Door
11. Pass the certification of UL10C (Flammability), and obtain its certifire

► Stable cooperative partner of international famous door control companies

Finishes - Aluminum, Gold, Bronze, White, Black, Brown

* SOFT, NO NEED TO CLOSE BY HAND: the door will closer by itself, enjoy self-driven

closing and latching, maintain quiet and security.

* CONSUMMATE CRAFTSMANSHIP: even operation, no oil leakage, noiseless

* SPRING FORWARD, EASY BACK: the commercial-grade arm won’t interfere with

opening, meanwhile shut doors gradually to allow for graceful extry 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.