I've used Midea's Duo for two years. Its quiet operation and icy cooling makes it the best portable AC, but I wish it was more energy-efficient.

The top rail (usually unattached for shipping purposes) will eventually rest against the lower edge of the window sash to provide the correct tilt angle and to prevent the AC unit from sliding ...

A window air conditioner is a practical and cost-effective ... but some units can be placed in a swing-out casement or sliding window (just be sure to look at the manual for specific installation ...

the Tolsprint is a real air conditioner. Use its wheels to navigate it to where you want it—it's a solid 50 pounds—and connect its out-port to a sliding window between 26.8 and 49.2 inches wide.

However, their venting is designed to work with sliding windows only ... craft knife to cut down the sheet to fit the window. Then I used my AC unit’s exhaust hose to measure the size I needed ...