1) Material quality:Aluminum alloy and SS plate. 2) Carrying capacity:85kg. 3) Color:as requirements.Door Closer *For Commercial and Residential use.*Cast aluminum alloy body shell.*Door Weight:85kg. *Power Range:EN 3-5.*Closing & Latch speed controlled by two independent regulating vales.*Multi-sized and Anti-freeze oil is optional.constant lubrication from -45°C to +70°C. *Hold-open function optional.*Regular Arm,Top Jamb or Parallel installation and different angles to open the door.*Finish: silver, bronze, golden, white; others as per customers request.*Manufactured By ISO 9001 Qualified Factory.*Warranty:B series door closer is guaranteed for3 years from the date of manufacture against any defect in material or workmanship. Defective product will be replaced by a new unit. This guarantee is void if the product has been subjected of misapplication or abuse.