2.2 You must install the Open Window Brackets.
WARNING
Failing to do this could cause injury or property damage.
Use the 1/4, 1/2″ Type B
screw
Installation Guide Page 4
3. SEAL AND CLOSE THE WINDOW
3.1 Measure, cut and install the side arm foam.
WARNING
Do not leave the unit unattended during installation.
3.2 Secure the anti-tip brackets into the window track and then close the window.