Office Sliding Arm Door Closer Adjustable Latching Speed For 25-45kg Inside Door

Office Sliding Arm Door Closer Adjustable Latching Speed For 25-45kg Inside Door

• Two steps speed adjustment of closing and latching
• Advanced Workmanship: smooth operation, oil tight, no noise
• Dorrenhaus - Focusing on manufacturing door closers

Dorrhaus model D20 is small size concealed door closer, suitable for max. 850mm width

door, min. thickness of door 40mm and plus, matched hole in door and door frame shall

be processed after the confirmation of order, so that the closer can be installed properly.

1. Slim body with 28mm thickness, non-handed installation

2. Manufactured as per UL 228 standard, tested life cycles in factory 150,000+

3. Double adjusting screws controls closing and latching speed separately

4. Suitable for light duty traffic area, such as hotel or office room doors etc.

5. Hydraulic structure, needle bearing, rack and pinion dual heat treated

6. Core Advantage: domestic good sold model, suitable for thin door

7. Fuchs lubricating fluid for all weather running and continuing lubrication

8. Concealed Sliding Arm Door Closer UL standard for 25-45kg inside door

9. Material: casting aluminums housing and anodized aluminum sliding arm

► 7 years cooperative manufacturer of universal top security enterprises

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

* SPRING THRUST, EASY CLOSING: the commercial-grade arm won’t interfere with opening,

while closing doors slowly enough to allow graceful entrance and exit

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

closing and locking, keep quiet and safety

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