Use screws to attach the unit’s flange for the sash. Employing additional screws, connect an L-formed bracket to attach the bottom window sash to the highest window sash. This will stop the window from unintentionally opening. Only use a registered, trustworthy installer that is qualified in refrigeration and air-con. Am https://air-conditioner-installat20742.blog4youth.com/30119869/air-conditioner-installation-an-overview