Window Seal for Portable AC Kit, Air Conditioner Window Seal 3-Layer Thickened, Thermal Insulation, Heat Blocking Vent for Sliding Windows & Doors

• 【3-Layer Thickened Insulation Design】：Upgrade your portable air conditioner window seal with a premium 3-layer construction featuring reflective aluminium foil, thick cotton insulation and high-density Oxford fabric. It helps block heat, UV rays and outdoor air, keeping cool air inside and improving cooling efficiency while reducing energy waste.
• 【Keeps Cool Air In & Hot Air Out】：Create a tighter seal around your AC exhaust hose and window opening to prevent hot air backflow, dust and moisture from entering. The insulated design helps maintain a comfortable indoor temperature, allowing your portable air conditioner to work more effectively during hot summer days.
• 【Flexible Size Adjustment for Various Windows】：Designed for sliding windows, sliding glass doors and hung windows. The adjustable 25 x 250cm window seal can be folded inward to fit smaller openings, providing a more secure fit without complicated measurements or tools. (Not suitable for casement windows.)
• 【Upgraded Dual-Layer Exhaust Sleeve】：Featuring an improved zipper-free dual-layer exhaust sleeve design, with an inner sleeve for stable hose support and an outer sleeve to reduce air leakage. The reinforced structure keeps the exhaust hose securely positioned while providing a tighter and more durable seal.
• 【Easy Installation & Space-Saving Storage】：No drilling or permanent modifications required. Simply install the window seal and secure it around the exhaust hose for quick setup. Lightweight and foldable, it rolls up compactly for convenient storage when not in use, making it ideal for homes, bedrooms and offices.

Keep Your Home Cooler with a Better Window Seal Solution Make the most of your portable air conditioner with this upgraded insulated window seal kit, specially designed to help keep cool air inside and block hot air from entering. By creating a tighter barrier around your AC exhaust hose, it improves cooling performance, reduces energy loss and helps your room stay comfortable throughout warm summer days. Premium 3-Layer Insulated Construction Unlike thin and transparent window seals, this upgraded design features a 3-layer structure made from reflective aluminium foil, thick cotton insulation and durable Oxford fabric. The multi-layer material helps reflect sunlight, reduce heat transfer and provide better insulation, while also helping to block dust, moisture and outdoor air. Improved Dual-Layer Exhaust Sleeve Design The enhanced exhaust sleeve uses a zipper-free dual-layer structure for better sealing and stability. The inner sleeve supports the air conditioner hose securely, while the outer sleeve helps minimise air leakage and prevent hot air from flowing back into your room. The reinforced design provides a more reliable and long-lasting solution compared with traditional zipper-style seals. Adjustable Fit for Different Window Sizes With a flexible 25 x 250cm/25x100cm size, the window seal can be adjusted to fit exact or smaller openings by folding the excess fabric inward. It is compatible with most sliding windows, sliding doors and hung windows, making it suitable for bedrooms, living rooms, offices and other indoor spaces. Please note: This product is not suitable for outward-opening casement windows. Quick Installation & Easy Storage No drilling, tools or permanent changes to your window are required. Simply attach the seal, position the exhaust hose and secure the opening for a quick installation. When the season ends, the lightweight design can be rolled up and stored neatly, saving space when not in use. Designed for a More Comfortable Indoor Environment Whether you are working, relaxing or sleeping, this portable AC window seal helps create a more efficient cooling environment by reducing heat intrusion and maintaining cooler indoor air. A practical accessory for anyone using a portable air conditioner during summer. Product Features: ✔ 3-layer thermal insulation structure ✔ Reflects heat and blocks UV rays ✔ Reduces hot air backflow ✔ Dual-layer hose sealing system ✔ Adjustable size for flexible fitting ✔ Suitable for sliding windows and doors ✔ Easy installation and compact storage