Allow several inches of the case or sleeve to protrude from the wall into the room.
Install a window air conditioner in the wall.
Secure the side panels with screws.
Once you locate 3 4 wall studs mark them on the drywall with an x using a pencil.
Remove unit front cover and screws that hold the unit inside its case.
Use a stud finder to locate two adjacent stud bays that will provide enough room for the opening.
Once the window air conditioner is secure take some final steps to help keep the warm air outside and the cool air inside.
Install the case or sleeve into the opening.
Build a jamb box of 1 6 pre primed pine about 4 inches wider and 4 inches taller than the air conditioner required.
Extend the accordion panels from both sides of the air conditioner to the window sash track.
Then measure the width of your through the wall air conditioner and transfer that measurement to the wall where the studs were marked.
This allows for a replacement unit which might be larger.