Configuration instructions: 1.Hinge load-bearing capacity: ≤ 80 Kg. To maintain the best usage condition, it is recommended that the width-to-height ratio of the window be kept at approximately 1:1.5; 2.It can accommodate window types with a width ranging from 480 to 750 mm and a height ranging from 660 to 1700 mm. The size and specification window types can be met by replacing the ③ type accessory. 3.This configuration enables the installation of accessories numbered 11 to 14 to achieve the solution of adding back locking points. 4.Fan self-weight (total weight of glass, fan profiles and other accessories) x 1.4 (safety factor) ≤ hinge maximum load-bearing. 5.The reference manual for the use of hardware components is preceded by the Xifei maintenance and care statement.