Generous,elegant design
Provide smooth and powerful thrust
Installation of up and down fixed mode or sliding mode
A variety of thurst choice
Functions of fire prevention:Continuous working 30 minutes at 300 degrees
Double-pole driver can easily open the super-wide window and special emphasis windows
A variety of storke choice (maximum available 1500 mm)
Rack-surface made of special materials which use anti-corrosion treatment
The material is extremely hard to ensure the smooth operation of the device
More than 10000 times tests
Protection class:IP65