Fire Safety Door Closers , Adjustable Closing Force Backcheck Door Closer

• Smooth running, oil tight, no abnormal sound
• Adjustable closing force 1 to 6 (ADA compliant)
• Factory testing more than 5 million life cycles
• Certification of ANSI/BHMA 156.4 Grade 1

Ω Fire Safety Door Closer for medium heavy duty commercial door

Ω Precise cast aluminum body and forged steel arm

Ω Separate closing, latching & backcheck regulating valves

Ω Tri-package: regular, parallel, and top jamb installation

Ω Non-handed installation, universal installation

Ω UL/cUL listed for use on swing fire rated doors

Ω ​ Rack and pinion design, needle bearing

Ω ​ Certifire No. GVEV.R27326, 3 hours fire rating safety

► Long-term cooperative partner of universal first-rate door closer brands

Closer Finishes - Painted: Aluminum, Gold, Bronze, White, Brown, Black

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

meanwhile shut doors gradually to allow for graceful entry and exit

* SOFT, NO MANUAL CLOSING : let the door close by itself, enjoy self-acting closing and

locking, keep quiet and safety.

* FITS WHERE YOU NEED IT: Surface mounted design and full set of screw, allow you to

install at different occasion, and is completely controlled.

* SIZE ADJUSTABLE AS PER YOUR REQUIREMENT: final user will make their decision,

You get 6 levels of closing power to suit any level of traffic

* CERTIFICATION TRUSTABLE:ANSI 156.4 - Grade 1 is the supreme standard achievable

for door closers.This one has actually surpassed a test to 2 million + cycles.

           ------------ 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.