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Window seal kit can effectively seal the gap and prevent the inflow of hot air,achieve energy saving and environmental protection. | Universal model, suitable for all portable air conditioners with 5" diameter hoses. | Adjustable Window kit replacement for portable air conditioner. It can be freely stretched and adjusted in length. Maximum adjustable length: 48"/123 cm. | Durable PVC material, fits for sliding window or sliding door. | Removed and stored space-saving when not in use.