Medium Heavy Duty Commercial Hydraulic Door Closer Adjusting Certifire ANSI Grade 1

• Designed for medium / heavy duty and commercial applications
• ANSI A156.4 Grade 1 - highest standard achievable for door closer
• The maximum factory tested life cycles of this model is 5 millions

When a durable method of security control and door hardware maintenance

is required, especially while high traffic application is needed, which may

including school, hotel, hospital, station, restaurant, workshop of factory,

shopping mall, landing-answer doors, exhibition center etc.

Ω Medium / heavy duty hydraulic door closer for commercial door

Ω Two regulating valves controls the adjusting closing & latching speed

Ω Non-handed installation for all regular mounting, universal application

Ω Fixed spring force #5 & #6; adjustable force #1-6 for door weight 150kg

Ω Comply with standard of ANSI / BHMA 156.4 grade 1, 2 mils life cycles

Ω Conform to the requirements of UL 10C certifire, 3 hours fire rated

Ω Precise cast aluminum body & forged steel arm, hold open arm optional

Ω Adjusting back check is standard function, hold open function optional

► 7 years cooperative supplier of world's famous door closer enterprises

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

* SPRING THRUST, EASY CLOSING: Commercial-level swing arm will not impact

opening, and close the door slow enough to allow for elegant entry and exit

* GENTLE, NO DEED TO CLOSE MANUALLY: let the door do the work, enjoy

self-driven shutdown and lock, maintain quiet and sureness

* SIZE ADJUSTABLE AS YOUR REQUIREMENTS: Let customers go their own pace.

Closing force of size 1 to 6 is available for various door weight and width

* CERTIFIABLY RELIABLE: ANSI 156.4 - Grade 1 is the supreme standard that can be

achieved by door closer. This model is actually super passed 2 million+ cycles testing.

* SUIT YOUR NEED: Surface mounted design and full set of screw, allows you to install

in any high traffic area, supply full control at the same time.

* Compare to: Norton 1600 series, LCN1260, Sargent 1130, Dorma7400 Series,

Yale 50BC series, Arrow 900N series, Stanley D1650, LawrenceLH5016.

           ------------ 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.