Products

We’re also specializing in strengthening the things management and QC method to ensure that we could maintain great gain while in the fiercely-competitive business for China Cheap price Telescopic Friction Stay Door Closer for Door /Window, Since the factory founded, we have committed to the development of new products. With the social and economic pace, we will continue to carry forward the spirit of “high quality, efficiency, innovation, integrity”, and stick to the operating principle of “credit first, customer first, quality excellent”. We will create a brilliant future in hair production with our partners.
We’re also specializing in strengthening the things management and QC method to ensure that we could maintain great gain while in the fiercely-competitive business for China Telescopic Door and Window Stay and Door Closer, High output volume, top quality, timely delivery and your satisfaction are guaranteed. We welcome all inquiries and comments. If you are interested in any of our items or have an OEM order to fulfill, make sure you feel free to contact us now. Working with us will save you money and time.

The D4016 Series features a single-piece cast aluminum body and a 1-3/8” heat-treated steel piston, a heat-treated pinion and staked valves. The D4016 Series standard door closer is certified ANSI/BHMA A156.4 Grade 1, is UL listed and is backed by a 10-year warranty.

*In case of unusually high or heavy doors, windy or draughty conditions, or special installations, a large power size of door closer should be used.

Dorrenhaus comprises R&D center, testing laboratory,manufacturing center and sales dept, has over 10 in-service engineers and research specialists. Since it was founded, developing High performance door control products has always been the objective of Dorrenhaus. Dorrenhaus people have continuously tried to improve product quality, introducing oversea high and new technical equipment,giving our company good technical capabilities. Moreover, all of our R&D engineers has more than 20 years experience in door closer industry.

WE ARE DORRENHAUS
WE STARTED AS A FAMILY BUSINESS, OVER 140 YEARS AGO!
Dorrenhaus brand was originated in 1872 in Germany,with the development and progress, Dorrenhaus successor decide to invest door closer factory in China.In 2011,Zhejiang Dorrenhaus Hardware Industrial Co.,Ltd was formally established.

They disable the self-closing function of a fire protection door in a controlled way. This means that they keep fire protection doors open, but automatically release them in the event of a fire so that door closers can do their job.

We’re also specializing in strengthening the things management and QC method to ensure that we could maintain great gain while in the fiercely-competitive business for China Cheap price Telescopic Friction Stay Door Closer for Door /Window, Since the factory founded, we have committed to the development of new products. With the social and economic pace, we will continue to carry forward the spirit of “high quality, efficiency, innovation, integrity”, and stick to the operating principle of “credit first, customer first, quality excellent”. We will create a brilliant future in hair production with our partners.
China Cheap price China Telescopic Door and Window Stay and Door Closer, High output volume, top quality, timely delivery and your satisfaction are guaranteed. We welcome all inquiries and comments. If you are interested in any of our items or have an OEM order to fulfill, make sure you feel free to contact us now. Working with us will save you money and time.