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Make your portable air conditioner or dryer work more efficiently with our 400CM air conditioner window seal kit. Designed for casement windows, it stops hot air from flowing back into your room while preventing cold air from leaking out.

This portable ac window vent kit is crafted from high-quality, waterproof TU fabric that is UV-resistant and durable. Whether it’s sunny or rainy, your room stays cool and dry. In addition to thermal insulation, this window seal also prevents bugs and rainwater from entering.

Easy to install with no tools or drilling needed — simply attach the air conditioner window kit to the frame with the included adhesive strip, adjust around the hose, and zip closed. Suitable for single and dual hose air conditioners, making it a perfect solution for homes, apartments, offices, and RVs.

Fits casement windows only — please measure your window before pur chasing.

FEATURES

• 【Keep Cool Air In & Hot Air Out】This AC window seal kit prevents cold air from escaping and stops hot air from re-entering your room. Improve cooling efficiency for your portable air conditioner and enjoy a faster, more effective cooling experience.
• 【Universal Fit for Casement Windows】Our casement window air conditioner seal kit fits all standard outward-opening or inward-opening windows up to 400CM. Perfect for single or dual hose portable ac window vent kit setups. (Please measure your window size before pur chase.)
• 【Waterproof & UV-Resistant】Made of premium waterproof TU fabric, this air conditioner window seal resists rain, blocks UV rays, and prevents heat from penetrating your space. Keep your room cool, dry, and comfortable all summer long.
• 【No Drilling & Easy Installation】No tools or drilling required! This window vent kit comes with strong adhesive tape and an integrated zipper design for quick installation — just peel, stick, and zip. Easily removable at the end of the season.
• 【Multi-Protection Barrier】Besides thermal insulation, the portable air conditioner window kit also prevents insects, mosquitoes, and rain from entering, providing you with a clean, quiet, and energy-efficient living space.

Most items at DealUS are new. A small selection is open box or pre-owned; check the individual listing for condition and packaging details.

Shipping is $8.99 in the continental U.S., or free on orders over $35. Need help? Contact us.