Products

We know that we only thrive if we could guarantee our combined price tag competiveness and quality advantageous at the same time for OEM China Adjustable Aluminium Door Closer for Fire-Proof Door&CE&UL (502), The principle of our company is always to offer high-quality solutions, experienced company, and trustworthy communication. Welcome all close friends to place trial buy for creating a long-term business romance.
We know that we only thrive if we could guarantee our combined price tag competiveness and quality advantageous at the same time for China Door Closer and Door Closers, Good quality and reasonable price have brought us stable customers and high reputation. Providing ‘Quality Solutions, Excellent Service, Competitive Prices and Prompt Delivery’, we’re now looking forward to even greater cooperation with overseas customers based on mutual benefits. We are going to work whole-heartedly to improve our products and services. We also promise to work jointly with business partners to elevate our cooperation to a higher level and share success together. Warmly welcome you to visit our factory sincerely.

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 know that we only thrive if we could guarantee our combined price tag competiveness and quality advantageous at the same time for OEM China Adjustable Aluminium Door Closer for Fire-Proof Door&CE&UL (502), The principle of our company is always to offer high-quality solutions, experienced company, and trustworthy communication. Welcome all close friends to place trial buy for creating a long-term business romance.
OEM China China Door Closer and Door Closers, Good quality and reasonable price have brought us stable customers and high reputation. Providing ‘Quality Solutions, Excellent Service, Competitive Prices and Prompt Delivery’, we’re now looking forward to even greater cooperation with overseas customers based on mutual benefits. We are going to work whole-heartedly to improve our products and services. We also promise to work jointly with business partners to elevate our cooperation to a higher level and share success together. Warmly welcome you to visit our factory sincerely.