Automatic Fire Door Closers 3 Hours Fire Rating 300000 Life Cycles for Wooden Door

Automatic Fire Door Closers 3 Hours Fire Rating 300000 Life Cycles for Wooden Door

• UL 228 standard, factory tested life cycles 300,000
• Exquisite Craft : even running, oil tight, noiseless
• Dorrenhaus - 7 years supplier to top world's brand

The body size (LxWxH) of this model is 167*37*56.5mm, quite near to the body spec.

of larger model D303, which is of 178*40*59.3mm, the cost of this model will be

around 15% lower than D303, meanwhile the model is of UL listed but D303

is without UL certification, which is of China compulsory product certification.

• Automatic Fire Door Closer UL Certified Overhead Fire Rating for 3 hours
• Suitable for low working wooden door, such as residential hallway door etc.
• Non handed installation, package for Regular-Arm and Top-Jamb mountings
• Obtain certifire of UL 10C in 2013 for self-closing door closers
• Two control valves, one adjust closing speed, another controls latching speed
• Closer Material: refined casting aluminum housing with flat steel rocker arm
• Whole process controlled beginning from open power to the final latching speed
• Structure: rack and pinion twice heat treated, with economical powder bearing
• Fuchs Brand Lubricants especially for qualified door closer constant lubrication.
• Core Advantages: Market Leader Model, reach UL 228 international standard
• Closer appearance: small dimension, soft with its body , temper force with grace

► Trusted cooperative supplier of international top door control companies

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

* SPRING THRUST, EASY BACK: the flat steel rocker arm will not impact opening,

meanwhile shut doors gradually to allow for graceful extry and exit

* SOFT, HANDS-FREE CLOSING: let the door finish work, enjoy self-driven closing

and latching, maintain quiet and security.

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