Fangrui Product Details [keep The Hot Air Out Of The Room]: This Portable Air Conditioner Window Seal Is Installed Between The Window Frame And The Window Through A Hose, Effectively Pushes The Hot Air Generated By The Air Conditioner Out Of The Window, Keeps The Cold Air In The Room, And Keeps Your Room Cooler A Very Long Time. [enhance Cooling Performance And Save Energy]: Air Conditioner Window Seals Are Made Of Durable Material, Which Can Effectively Block The Entry Of Hot Air, Let Your Room Cool Down Quickly In A Short Time, Enhance The Cooling Performance Of The Air Conditioner, And Help Reduce Energy Consumption , Reduce Carbon Dioxide Emissions, Save Your Electricity Consumption And Save Your Money. [waterproof Function]: The Casement Window Air Conditioner Seal Is Made Of Waterproof Material, Which Can Also Be Used In Rainy Days. Create A Cool Space For You On A Hot Summer Day. [easy To Install]: No Drilling And Tools Required, Everything You Need Is Provided. Simply Stick The Portable Air Conditioner Window Vent Kit T