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2.  While keeping a firm grip on the air 
conditioner, carefully place the unit into 
the window opening so the bottom of 
the air conditioner frame is against the 
window sill (Fig. 5). Carefully close the 
window behind the top rail of the unit.
NOTE
If storm window blocks AC, see Fig. 10.
NOTE
Check that air conditioner is tilted 
back per dimension H (Fig. 5) (tilted 
about 3° to 4° downward to the 
outside). After proper installation, 
condensate should not drain from the 
overflow drain hole during normal use. 
Adjust the slope if otherwise.
3.  Extend the side panels out against the window frame 
(Fig. 6).
window 
frame
Fig. 5
Fig. 6
Installation
Instructions
Wooden Windows
INSIDE
OUTSIDE
H:About 3/4” to 1”
for 6K to 8K)
Measure from the cabinet edge
3
H:About 1” to 1
/
for 10K to 12K)
8”
H
H:About 5/8” to 3/4”
for 5K)
Vinyl-Clad Windows
INSIDE
OUTSIDE
H:About 3/4” to 1”
for 5K to 8K)
Measure from the cabinet edge
3
H:About 1” to 1
/
for 10K to 12K)
8”
H
D. Slide the panel all the way in and 
repeat on the other side.
Top Rail
Bottom Rail
Top left
Top right
Fig. 4
Fig. 5
4. INSTALL SUPPORT BRACKET
A. Place the frame lock between the 
frame extensions and the window 
sill as shown (Fig. 7A for Wooden 
windows), (Fig. 7B for Vinyl-Clad 
windows).
  Drive 3/4” (19 mm) or 1/2” (12.7 mm) 
locking screws through the frame lock 
and into the sill.
  NOTE: To prevent window sill from 
splitting, drill 1/8” (3 mm) pilot holes 
before driving screws.
Fig. 7A Fig. 7B