Gree GPA05AK Owner's Manual page 26

Installation in a double-hung sash window
5. Fix the rain shield on the support with nuts, spring washer, washer and bolt.
6. Cut the sponge B to a proper length and attach it to the window sash.
7. Attach the window panel to the window stool.
7.1 If the inner width of the window is less than 20.5"(520mm)
The window panel cannot be installed in windows less than 20.5"(520mm) wide.
(1) Remove the adjustment panel from the window panel, and cut the window
panel to the same width as the window.
(2) Open the window sash and place the window panel on the window stool.
(3) Secure the window panel to the window stool with screws.
adjustment panel
spring washer
nut
washer
screws
nut
spring washer
Window panel assemble
Cut
support
bolt
washer
rain shield
sponge B (adhesive)
<20.5"
23
Window panel
Window stool