ANSI Grade 1 Back Check Size Adjustable Door Closer Fire Rating for Commercial

• Max closing force # 6, suitable for heavy metal doors
• No oil leakage, no abnormal noise, stable operation
• Adjustable closing force, controllable, extensive use

Ω UL listed ANSI Grade 1 size adjustable closer for commercial doors
Ω Adjustable back check available, delayed action function optional
Ω Precise cast aluminum body and steel swing arm, hold open arm optional
Ω Obtain certification of ANSI A156.4 grade 1, 2 millions life cycles
Ω Pass certification of UL 10C, up to and including 3 hours fire rating
Ω Automatic closing and latching speed controlled by dual separate valves
Ω Adjustable closing force #1-6, accord with ADA standard requirements
Ω Non-handed installation, designed for all standard mounting methods
Ω Hydraulic type, rack and pinion twice high heat-treated, needle bearing
Ω Fuchs closer lubricating oil used for smooth operation and lubrication

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

* GENTLE, HANDS-FREE CLOSING: let the door finish work, enjoy self-acting closing
and locking, keep quiet and sureness.
* SPRING FORWARD, EASE BACK: the commercial-grade arm won’t interfere with
opening, meanwhile shut doors gradually to allow for graceful entry and exit
* TRUSTABLE CERTIFICATION: ANSI 156.4 - Grade 1 is the highest standard achievable
for Door Closers. This model is actually super passed 2 million+ cycles testing.
* SIZE ADJUSTABLE AS YOUR REQUIREMENT: let customer act at their own pace.
which size should be used for different closing force: from size 1 to size 6.
* FITS WHERE YOU NEED IT: surface mounted model and full sets of screw package,
allows you to install in any high traffic area, fully controlled at the same time.

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View all door closer in display

-------- Main Superiority --------

1. UL Listed & CE certified, industry’s highest standard

2. 7 years experience in production of door closer for export

3. Long-term and stable supplier of famous global companies

4. Only manufacture door closer, 1.5-2.0mils pcs annually

5. Passed Europe and China dual quality system certification

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-------- Workshop and Output --------

Dorrenhaus have strong precision manufacturing capacity, now have 6 complete production lines,

with annual output of 1.5-2.0 mils pieces of door closer.

View more information about Dorrenhaus

           ------------ 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.