400CM Window Seal for Mobile Air ConditionersWaterproof Window Seal, Portable Air Conditioner Window Caulking Cloth, Ideal for Portable Air Conditioner and Tumble DryerAir Conditioning Window Seal for Portable Air Conditioners, Tumble DryersThis fantastic seal prevents hot air from your air conditioning hose from flowing back into your room.The window seal for portable air conditioners seals around your open window, then wraps around the nozzle of your hose, blocking the return of hot air. To keep your air conditioning running at its most efficient.The Portable Air Conditioner and Dryer Window Seal is extremely easy to install and fits any portable unit.Cool rooms faster and more efficiently.Compatible with all portable air conditioners and dryers. No need to purchase window kits, adapters for your hose or additional tools.Prevents hot exhaust air from returning to your room. A great solution that will save you tons on bills!Easy to attach to window and pipe.Easy to Remove: When the weather turns cold, simply remove the air conditioner window seal and save it for next summer.+ productQuick and Easy to Install:Step 1. Clean the window frames and glass, and stick the Velcro to the inside of the window frames and the window itself.Step 2. Lay the fabric flat, the blue curved part corresponds to the window frame; the green straight part corresponds to the window. Stick the window sealing strips according to the corresponding area of the window.Step 3. Open the zipper, put the hose out of the window, and close the zipper.The insulation fabric is suitable for standard Velux windows.Note: Not suitable for Velux with central pivot!For double-hung windows, calculate the perimeter of one hung window only.Choose the size of the insulation fabric that is closest to the measured dimension. For example. a + b + c + d = 380 cm, the correct size is 400 cmThe insulation fabric is suitable for standard Velux windows.Note: Not suitable for Velux with central pivot!IDENTIFY BOTH SIDES OF THE INSULATION FABRICLay the insulation fabric flat on a tableThe BLUE curved part is the wider side of the insulation fabricThe GREEN right part is the narrow sideThe RED dot indicates the center of the insulation fabricNote: For double-leaf windows, keep one leaf closed and install the insulation fabric on the second leaf which must be ajar!FeaturesMaterial: FabricSpecifications: 400CM StandardSuitable for all portable air conditioners and tumble dryers. To prevent warm air from your air conditioner hose from flowing back into your room.Suitable for all common window types, but cannot be used on left and right sliding window or sliding door.