GE 5800 - Manual (Page 18)

INSTALL THE UNIT INTO THE
WALL CASE
Slide the unit into the wall case and secure with four
screws through the unit flange holes.
3 REPLACE THE ROOM CABINET
Reinstall the room cabinet by hooking the top over
the rail along the unit top (1), then pushing it in at
the bottom (2).
4
Installation Instructions
18
NOTE: There are several extra holes in the unit side
flanges for installation in wall cases other than GE.
To avoid damaging the flange insulation, the installer
should use an awl or other sharp tool to puncture the
insulation in the appropriate holes before installing
the attachment screws.