You will need to build cut a groove not just a front lip.
Mounting air conditioner in top of window.
Position the air conditioner in the window opening so the spacers rest on the inside edge of the window frame and tilt the air conditioner backward slightly to force condensation outside.
Metal screws will go into metal.
It can be screwed into place itself or propped from the outside.
Secure the side panels with screws.
Many people have inexpensive air conditioners that are intended to fit into a double hung vertically sliding sash windows and want to use them in horizontally sliding windows.
It features a highly durable convenient and safe hence preventing the window hassles and also giving maximum weight allowance.
If you already have some of these air conditioners or are attracted to.
Take the thick foam rubber.
A front lip is bad for two reasons.
In addition it has a universal and a moderate size fitting into any windows thanks to its adjustable height.
Atk universal window air conditioner bracket should be your option when mounting brackets are concerned.
Air jade universal ac window air conditioner bracket 85lbs designed 5 000 to 12 000 btu sized small unit light duty support brackets s 4 4 out of 5 stars 93 18 99 18.
Also the window below has to be propped to stay snug up against the machine.
Extend the accordion panels from both sides of the air conditioner to the window sash track.
Window air conditioners often come with a foam insulating strip.
But since you are putting the ac at the top of the window then you need to support the bottom from pushing both down and inward or set it on a shelf.
Screw the vertical mounting flange of each extension to the window jambs.
The main thing is that the unit has to be attached to your window frames screws which is a little trickier with metal frames but definitely doable.
Pull out each extension to close off the space to the left and right of the air conditioner.
Step 5 slide the window down tight onto the air conditioner and spread the spacers out to close the gaps between the air conditioner and the window frame.
Once the window air conditioner is secure take some final steps to help keep the warm air outside and the cool air inside.