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DT-30 Series
Concealed Door Closer Adjustment
Item No:DT-30
Material: Aluminum
Finish:Powder Painted
Color:Silver,Black, White, Champagne,Gold,Etc
Power Size: 2-4
Door Weight Capacity: 45-85kg
Suitable for : Wooden Door
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Certificate
Rated Products
Concealed Door Closer Frequently Asked Questions
Are concealed door closers any good?
Yes, concealed door closers are good for many cases. They offer a sleek, unobtrusive look (hiding hardware), work well for modern/interior doors, and often provide smooth, adjustable closing force. However, they’re less ideal for heavy/exterior doors (due to lower load capacity) and harder to install/repair than surface-mounted ones.
What is a concealed door closer?
A concealed door closer is a device that automatically closes a door while remaining hidden from view. It is typically installed within the door frame or the door itself.
What is the lifespan of a concealed door closer?
The lifespan of a concealed door closer typically ranges from 5 to 15 years, but this varies significantly based on three key factors:
1.Quality & Build: High-end models with durable materials (e.g., corrosion-resistant metals, robust hydraulic seals) often last 10–15 years.
2.Usage Frequency: Heavy-traffic areas (e.g., hotel lobbies, office corridors) with thousands of daily door cycles can shorten lifespan to 5–7 years. Low-traffic spaces (e.g., private home bedrooms) may extend it to 12–15 years.
3.Maintenance & Environment: Regular lubrication of moving parts and cleaning prevents premature wear. Exposure to extreme temperatures, moisture, or dust (e.g., unconditioned exterior vestibules) can degrade seals and hydraulics, reducing lifespan
What is the minimum door thickness for concealed door closer?
The minimum door thickness for a concealed door closer varies depending on the model and manufacturer. Generally, it ranges from 30 mm to 48 mm.
Company information
Establish in year 2008, Dortec has more than 17 years experience for manufacturing panic bar trim.
Dortec has run business with more than 120 overseas companies in North America, Europe, South America, Middle East and Southeast Asia. Dortec always takes quality for its life.
Since the establishment of the company, Dortec always keeps this motto in their hearts: We would rather spend millions of dollars more to prevent even one piece of unqualified products go out of our workshop.
Dortec sincerely promises to guarantee the quality and to continually provide reliable and excellent products to our customers all over the world.
In the year 2001, Dortec have got ISO9001-2000 certification. Up to now, many of our products are certified under , CCC, the UL Fire-testing and CE certification for European market.
Our Workshop
Workflow Chat
- Bending
- Punching
- Painting
- Assemble
- Packing
exhibition
Get in touch
If you have demand for door closer, welcome to contact us
dortecdc@gmail.com
We reply within 24 hours
Have any questions?
+8613757740850
Working hours
Mon-Sat, 8am until 8pm
China Based
Hefei city
