Product performance 1:Best use window width FW*:450mm-700mm
2:Choose different specifications of hand operated window openers according to different window widths
3:The window opener does not have a load-bearing effect on the window sash. Please choose the correct hinge according to the weight of the sash
4:It is recommended to install a hand operated window opener after the interior decoration of the building is completed
5:007/001:Equipped with European standard sliding groove/ordinary sliding groove
