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China Commercial Heavy Duty Door Closer Factory – D71 SERIES CONCEALED CAM ACTION SIZE 3-6 DOOR CLOSERS – Dorrenhaus

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We persistently execute our spirit of ''Innovation bringing growth, Highly-quality making sure subsistence, Administration marketing reward, Credit history attracting clients for Fire Rated Door Self Closing, Heavy Duty Door Closer With Hold Open, Indoor Automatic Door Closer, Since establishment within the early 1990s, now we have arrange our sale network in USA, Germany, Asia, and several Middle Eastern countries. We intention to get a top class supplier for worldwide OEM and aftermarket!
China Commercial Heavy Duty Door Closer Factory – 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 Commercial Heavy Duty Door Closer Factory –  D71 SERIES CONCEALED CAM ACTION  SIZE 3-6 DOOR CLOSERS – Dorrenhaus detail pictures


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Our personnel are generally within the spirit of "continuous improvement and excellence", and using the excellent top quality goods, favorable rate and superior after-sales expert services, we try to win every customer's believe in for China Commercial Heavy Duty Door Closer Factory – D71 SERIES CONCEALED CAM ACTION SIZE 3-6 DOOR CLOSERS – Dorrenhaus , The product will supply to all over the world, such as: Yemen, Costa rica, UK, We guarantee that our company will try our best to reduce customer purchase cost , shorten the period of purchase , stable products quality , increase customers' satisfaction and achieve win-win situation .
  • The sales manager is very patient, we communicated about three days before we decided to cooperate, finally, we are very satisfied with this cooperation!
    5 Stars By Jason from Haiti - 2018.09.29 13:24
    High production efficiency and good product quality, fast delivery and completed after-sale protection, a right choice, a best choice.
    5 Stars By Julia from Mauritania - 2017.11.11 11:41
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