How to Install a Window Ac in a New Home Without the Outside Sill
-
Pull the window extensions located at either side of the AC unit outward from the unit, until they touch the sides of the window frame. The extensions stretch into place like an accordion.
-
Secure the extensions to the sides of the window frames by placing screws through the mounting holes in the extension sides and into the frame. Use the same screws used for the mounting bracket.
-
Secure the extensions to the window sash by placing screws through the mounting holes along the top of the extension, into the front of the sash.
