XUEMEI Window Seal for Portable Air Conditioner, 13.1ft Oxford Cloth Waterproof Air Conditioner Window Seal with Hook Tape Prevent Warm Air Circulation Fit for Top-hung Roof, Casement Windows [Function] Our window seal can seal in hot air, preventing the backflow of hot air, suitable for outdoor or portable air conditioners, and creating an enclosed environment. [With Hook Tape] We are equipped with hook tape, which has strong sealing performance, easy installation, simple operation, and no drilling required. Suitable for hanging skylights, casement windows, and casement windows. [Upgrade Design] The window seal kit with an updated design, our window seals support dual-pipe mobile air conditioners with less air convection for better cooling. [Keep Cool] Our window seal allows mobile air conditioning units to cool your room in less time and keep your room longer Cooldown time. Effectively reduce air conditioning energy consumption and carbon dioxide emission. [Waterproof Oxford Cloth Material] The window seal kit is made of durable Oxford cloth, which is waterproof, preventing rainwater from entering the room from the outside when using the air conditioner on rainy days. color: White Size: 4m Delivery Quantity: 1 Piece