158" Portable AC Window Seal Kit – Self-Adhesive Vent Seal

158-Inch Portable AC Window Seal Kit – Airtight, Waterproof & Energy-Saving

Keep your home, office, apartment, or hotel room cool and comfortable with this extra-long Portable AC Window Seal Kit. Measuring approximately 400 × 37 cm (157.5 × 14.6 inches), this self-adhesive polyester fabric seal creates a tight barrier around your portable air conditioner's exhaust hose — stopping warm outside air from sneaking in and preventing cool conditioned air from escaping.

Made in Mainland China.

Why You'll Love This Window Seal

• Excellent Thermal Barrier: Fills gaps around window openings and exhaust ducts, minimizing air leakage and maximizing your portable AC's cooling efficiency — ideal for living rooms, bedrooms, offices, and more.
• Energy-Saving Design: By creating a near-airtight seal, this kit helps your portable AC work less to maintain a comfortable temperature, potentially lowering electricity costs during hot summer months.
• Tool-Free, Self-Adhesive Installation: Comes with self-adhesive tape for a quick, hassle-free setup — no tools, no drilling, no damage to window frames.
• Reusable & Removable: Easily removed and stored at the end of each season without leaving sticky residue or damaging surfaces. Reuse it year after year.
• Versatile Fit: Adapts to a wide range of window types and sizes, making it suitable for homes, apartments, dormitories, hotel rooms, offices, classrooms, and workshops.

Product Specifications

What's Included

• 1 × Portable AC Window Seal (158 inches long)
• 1 × Self-Adhesive Tape

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Note: Due to lighting conditions and display settings, slight color variations may occur. Due to manual measurement, minor size differences of ±1–2 cm are possible.

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What size windows does this portable AC window seal fit?

A: The seal measures approximately 158 inches (400 cm) in length and 14.6 inches (37 cm) in width, making it compatible with a wide variety of window types and sizes — including sliding, casement, and double-hung windows in homes, apartments, offices, hotel rooms, and more.

Q: Is this window seal easy to install without professional help?

A: Absolutely! This kit features a self-adhesive mechanism that requires no tools, no drilling, and no special skills. Simply peel, stick, and secure the seal around your window opening for an instant airtight fit. The included self-adhesive tape makes installation straightforward and mess-free.

Q: Can I reuse this AC window seal the following season?

A: Yes. The seal is designed to be removed carefully and stored when not in use, without damaging the adhesive or the window surface. This makes it a cost-effective, reusable solution you can rely on season after season.

Q: Will this seal work with all portable air conditioner brands?

A: This universal window seal is designed to fit most standard portable AC exhaust hose setups. Its generous 158-inch length gives you flexibility to cut or fold it to match your specific window dimensions and AC unit configuration.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.