Keep a window air conditioner efficient and your indoor space dry with this waterproof window seal. Made from density polyester with a sealed edge, it blocks rain and moisture while preserving performance over time. Waterproof protection: Dense polyester weave with a sealed edge barrier prevents water intrusion and reduces moisture around the unit for steadier cooling. Easy setup: Threestep installation with the included tension cord and tape kit, delivering a secure seal without tools. Adjustable fit: Flexible design fits most standard window AC units and a wide range of window sizes for versatile use. Durable construction: Reinforced seams and dense material resist deformation, maintaining seal effectiveness through seasons. Practical uses: Rainy climates: Protects indoors from moisture when the AC is in a window exposed to precipitation. Irregular or large gaps: Reduces drafts and energy loss in apartments with uneven window openings. Temporary or portable setups: Ideal for seasonal cooling or switching between rooms or homes without a lasting install.