Products

Our improvement depends on the highly developed gear ,outstanding talents and repeatedly strengthened technology forces for Cheap price New Product Adjustable Door Closer (203) New Design, If you are fascinated in almost any of our solutions or would want to discuss a custom-made order, remember to really feel absolutely free to contact us.
Our improvement depends on the highly developed gear ,outstanding talents and repeatedly strengthened technology forces for China Door Closer and Automatic Swing Door Operator, Our qualified engineering team will usually be prepared to serve you for consultation and feedback. We’re able to also deliver you with absolutely free samples to meet your needs. Best efforts might be made to provide you the ideal service and products. For anyone who is interested in our company and items, please make contact with us by sending us emails or contact us right away. In order to know our solutions and organization. ar more, you can come to our factory to determine it. We’ve been gonna usually welcome guests from around the globe to our corporation. o create small business relations with us. Be sure to really feel no cost to speak to us for enterprise. nd we believe we’ve been likely to share the most effective trading practical experience with all our merchants.

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 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.

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.

Door closers pull doors closed once they’ve been opened and released. They are used on fire doors to help prevent the spread of flames and smoke in the event of a fire. They are also used to keep out drafts and regulate room temperature in interior spaces.

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.

Our improvement depends on the highly developed gear ,outstanding talents and repeatedly strengthened technology forces for Cheap price New Product Adjustable Door Closer (203) New Design, If you are fascinated in almost any of our solutions or would want to discuss a custom-made order, remember to really feel absolutely free to contact us.
Cheap price China Door Closer and Automatic Swing Door Operator, Our qualified engineering team will usually be prepared to serve you for consultation and feedback. We’re able to also deliver you with absolutely free samples to meet your needs. Best efforts might be made to provide you the ideal service and products. For anyone who is interested in our company and items, please make contact with us by sending us emails or contact us right away. In order to know our solutions and organization. ar more, you can come to our factory to determine it. We’ve been gonna usually welcome guests from around the globe to our corporation. o create small business relations with us. Be sure to really feel no cost to speak to us for enterprise. nd we believe we’ve been likely to share the most effective trading practical experience with all our merchants.