Overhead Installed Exterior Door Closer，Extra Heavy Duty Door Closer For Iron Doors

Overhead Installed Exterior Door Closer , Extra Heavy Duty Door Closer For Iron Door

• Amazon Best-selling type, comply supreme Industrial Standard
• Pass certification of ANSI/BHMA A156.4 standard: Grade 1
• Advance Craft: even running, oil tight, no abnormal sound

1. Hydraulic type, twice high temperature heat treatment needle bearing and pinion

2. Whole process controlled started from opening force ended at latching speed:

ADA (Handicap) multi-size closer with adjustable spring power from 1-6 including

ADA 8.5 lbs. exterior door and 5 lbs. interior door opening force.

3. Extra Heavy Duty Commercial Exterior Door Closer Controls Opening & Latching

4. Standard back-check adjusted by back-check intensity regulating valve,

optional delayed-action adjusted by delayed action closing regulating valve

5. Material: aluminum cast Closer Housing, forged steel arm and full ABS cover

6. Surface of door closer: American design, Steady and generous with Full cover

7. Adjusting latching & sweep speed controlled by dual speed adjust valves

9. For commercial applications or for iron doors subject to high levels of abuse

10. Factory test life reaches 5,000,000+, conform to UL 10C: u3 hours fire rating test

11. Overhead installation for regular arm, Top Jamb and parallel arm mounting

12. Durable hydraulic fluid for all weather and continuous lubrication.

► Long-term cooperative supplier of international well-known door hardware companies

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

* FITS WHERE YOU NEED IT: The surface mount design and tri pack options, allow you

to install this over any high-traffic area, while providing complete control

* SPRING THRUST, EASY BACK: the commercial-grade arm will not impact opening,

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

* SOFT, NO NEED TO CLOSE MANUALLY: allow the door do the work, enjoy automatic

shutdown and lock, maintaining quiet and safety.

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

achieved by door closer. In fact the life cycle of this model is much more than 2 millions.

* ADJUSTING ACCORDING TO YOUR REQUEST: Let customers go their own pace,

which size should be used for different closing force: from size 1 to size 6.

------------ 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.