LG LWHD1006R Manual page 22

Installation
Open the window.
Mark the centerline on the sill.
Place the cabinet in the
window and align it with the
centerline.
Attach the cabinet to the sill
with wood screws (Type B).
Lower the window to allow the
sash to fall behind the upper
guide so the cabinet can rest
against it.
LWHD1006R
p13