Gree GPA05AK Owner's Manual page 31

Installation in a sliding sash window
7.3 If the inner width of the window is between 37.4" (950mm) and 56.7" (1440mm)
inclusive.
(1) Attach the extension panel to the adjustment panel.
(2) Open the window sash and place the window panel on the window stool.
(3) Slide the adjustment and extension panels to fit the window stool height.
(4) Secure the window panel to the window stool with screws.
Screws
8. Cut the sponge B to a proper length and attach it to the window panel.
9. Close the window securely against the window panel.
Extension panel
adjustment panel
Window panel assemble
sponge B (adhesive)
28
37.4"~56.7"