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China Strong Door Closer Manufacturer – D71 SERIES CONCEALED CAM ACTION SIZE 3-6 DOOR CLOSERS – Dorrenhaus

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We strive for excellence, service the customers", hopes to become the best cooperation team and dominator enterprise for personnel, suppliers and customers, realizes value share and continuous promotion for Door Closer Types, Panic Hardware, Automatic Door Opener And Closer For Home, If you are interested in our products, please feel free to send us your inquiry. We sincerely hope to establish win-win business relationships with you.
China Strong Door Closer Manufacturer – D71 SERIES CONCEALED CAM ACTION SIZE 3-6 DOOR CLOSERS – Dorrenhaus Detail:

Certification CE Marked
Spring Power Adjustable Size 3-6
Durability 500,000 cycles above
Function Adjustable Closing speed
Adjustable Latching speed
Adjustable Backcheck
Installation type Concealedwith sliding trackarm 
Max. Opening 120 °
Pressure relief valve Yes
Mechanism Cam action
Hand of door Non handed
Materials of Body Die-Cast Iron
Materials of guiderailand Main Arm 6061, Steel
Materials of Spring 60Si2Mn
Backcheck NO
Hold open Yes
Delayed Action NO 
Bearing Full complement bearings for long durability
Application Suitable for interior wood, hollow metal, and aluminum doors and frames
Product Description Efficient cam and roller design
Finish Silver, Brown, White,Black, Others upon request.
Warranty 5 Years
Minimum door thickness Wooden door52mmMetal door48mm

Recommended for interior or exterior doors including:
• Offices
• Banks
• Retail Malls
• Hotels
• Health Care
• Clinics

Concealed door closers come in two main types: overhead concealed and under the floor concealed.

Concealed fire door closers provide the functionality of an overhead door closer but are fitted within the door leaf and frame. This type of installation is aesthetically pleasing and helps to reduce vandalism, as most of the door closer is hidden from sight.

Insert the retainer between the chain links closest to the cylinder face plate. Remove the anchor plate from the door frame and turn the anchor plate clockwise to increase the tension and anti- clockwise to decrease the tension. Re-fix the anchor plate to the door frame and remove the retainer.

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Recommended Recommended Max.
Model # Spring power Door Weight Door Leaf Width (mm ) Notes
D71 2-4 20-100 KGS 1100 mm Slide track arm

*Note:Open the door to the desired angle,and then tighten the set screws in the slider combination.If the HO function is not needed,loosen the fixing screws.

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*Rapid decrease in opening force makes doors easy to open, yet provides maximum closing force at the latch.
D71 can be inverted to install the closer body in the frame.Invisible when door is closed.

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China Strong Door Closer Manufacturer –  D71 SERIES CONCEALED CAM ACTION  SIZE 3-6 DOOR CLOSERS – Dorrenhaus detail pictures


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We purpose to understand high quality disfigurement with the output and supply the top service to domestic and overseas buyers wholeheartedly for China Strong Door Closer Manufacturer – D71 SERIES CONCEALED CAM ACTION SIZE 3-6 DOOR CLOSERS – Dorrenhaus , The product will supply to all over the world, such as: Brisbane, panama, Romania, By adhering to the principle of "human oriented, winning by quality", our company sincerely welcomes merchants from at home and abroad to visit us, talk business with us and jointly create a brilliant future.
  • It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
    5 Stars By Ivy from Cologne - 2018.05.22 12:13
    We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Jo from Barbados - 2018.12.14 15:26
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