Light Duty Size 3 Concealed Automatic Door Closer Auto Hold Open Optional

Light Duty Size 3 Concealed Automatic Door Closer Auto Hold Open Optional

• Dorrenhaus - Focusing on manufacturing door closers
• Consummate Craft: even running, no oil leakage, noiseless
• Conform to UL 228 standard, tested life cycles 150,000+

Dorhaus D30S light duty concealed door closer, hydraulic type, basically designed

for room door of hotel, restaurant or similar public area. Auto hold function is for

optional, which can be mounted or removed from track rail easily. Anyhow, many

commercial building do not permit the mounting of any type of door hardware

with hold open function.

1. Material: precise cast aluminum body with anodized aluminum track arm

2. High quality hydraulic fluid for high lubricity and constant lubrication

3. Structure: Hydraulic type, needle bearing, dual heat treatment pinion and rack

4. Light Duty Size 3 Concealed Automatic Door Closer Auto Hold Open Optional

6. Good for light duty working frequency, for example: hotel room doors etc.

7. Key Features: Chinese B2C Hot-sale Model, Meet National Standard

8. Out-shape: Concealed style, Elegant Appearance,

9. Whole process controlled from door opening force to door latching speed

10. Automatically sweep & latching speed adjusted by double adjusting screw

► Trusted cooperative partner of international top security trade mark

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

* SOFT, NO NEED TO CLOSE BY HAND: the door will closer by itself, enjoy

self-acting closing and locking, keep quiet and safety

* SPRING FORWARD, EASY CLOSING: commercial-level swing arm won’t interfere

with opening, while closing doors slowly enough to allow graceful entrance and exit

           ------------ 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.