Use screws to attach the unit’s flange on the sash. Applying supplemental screws, connect an L-formed bracket to attach The underside window sash to the highest window sash. This can protect against the window from unintentionally opening. Make sure you see HomeAdvisor's Terms and Conditions for more comprehensive information on https://airconditionerinstallatio86418.bcbloggers.com/29094423/new-step-by-step-map-for-air-conditioner-installation