Exterior Overhead Hydraulic Door Closer Size 4 / 3 Top Jamb Mounted Outward Opening

Exterior Overhead Hydraulic Door Closer Size 4 / 3 Top Jamb Mounted Outward Opening

• Traditional style, domestic market leader model
• Dorhaus - Focus on manufacturing door closers
• Smooth operation, oil tight, no abnormal sound

Dorhaus overhead door closers D300 are the most common model, it's widely used

throughout residential properties. For example, exterior doors in offices, conference

doors, they are typically affixed with a door closer that automatically closes the door.

Ω Light duty exterior overhead hydraulic door closer mainly for residential door

Ω Power bearing, rack and pinion contained in precision cast aluminum body

Ω Certificate of China Compulsory Product Certification for Fire Rated Door Closer

Issued by China Certification Center for Fire Products Ministry of Public Security

Ω Double Regulating Valves Controls Closing and Latching Speed Adjustable

Ω Fixed Closing Power size three / four , applicable door width 950mm, 1100mm

Ω Suitable for regular arm and top jamb overhead mounted ( for outward opening )

Ω Fuchs high quality lubricating fluid for door closer constant lubrication

Ω Grade II for medium working frequency, such as office meeting room, school,

chamber or club

► Trusty cooperative supplier of universal high-end door control enterprises

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

* SPRING FORWARD, EASY BACK: screw thread steel swing arm will not impact opening,

meanwhile shut doors gradually to allow for graceful entry and exit

* GENTLE, NO NEED TO CLOSE BY HAND: let the door close by itself, enjoy self-driven

shutdown and lock, maintain quiet and sureness.

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