---
product_id: 540847828
title: "Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157\"（400CM）"
brand: "ikstar"
price: "€ 4.96"
currency: EUR
in_stock: false
url: https://www.desertcart.hr/products/540847828-upgrade-portable-ac-window-seal-casement-window-air-conditioner-seal
store_origin: HR
region: Croatia
---

# Tool-free, easy installation & removal Reusable & eco-friendly design 78% boost in cooling efficiency Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM）

**Brand:** ikstar
**Price:** € 4.96
**Availability:** ❌ Out of Stock

## Summary

> ❄️ Seal the cool, ditch the heat—your window’s new best friend!

## Quick Answers

- **What is this?** Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） by ikstar
- **How much does it cost?** € 4.96 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/540847828-upgrade-portable-ac-window-seal-casement-window-air-conditioner-seal)

## Best For

- ikstar enthusiasts

## Why This Product

- Trusted ikstar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Weatherproof:** Made from thickened translucent material with 4 zipper settings to block air, rain, and irritants.
- • **Maximize Your AC Power:** Seals gaps to increase cooling efficiency by 78%, saving energy and cutting bills.
- • **Eco-Friendly & Reusable:** Sustainable design you can wash and reuse season after season, reducing waste.
- • **Effortless Setup & Removal:** No tools or drilling needed—install or detach in minutes without leaving marks.
- • **Universal Fit for Casement Windows:** Compatible with most bottom-hung and skylight windows up to 157" perimeter.

## Overview

The Upgrade Portable AC Window Seal is a versatile, reusable sealing solution designed for casement and skylight windows up to 157" perimeter. It boosts portable AC cooling efficiency by 78% by eliminating air gaps, installs easily without tools or damage, and features durable, weather-resistant materials with adjustable zippers. Perfect for energy-conscious professionals seeking a sleek, eco-friendly way to keep their space cool and comfortable.

## Description

Window Seal hose

## Features

- Increase Coling Efficiency by 78%: If you're using a portable air conditioner to keep your home cool, you may be experiencing reduced efficiency and wasted energy due to gaps between the unit and your window. By sealing the gap between your air conditioner and window, this ac seal prevents air from entering or escaping, resulting in a more efficient cooling system.You will Get a cooler and more comfortable living space while saving money on your energy bills.
- The 2024 Upgrade AC Window Seal: It provides a more secure and efficient seal compared to AC window vent kits. Compared to traditional kits, The portable ac window seal is also reusable, eco-friendly, and easy to install without any tools. In addition, the AC unit window seal is compatible with a wider variety of window types and sizes than traditional window kits, making it a versatile solution for window-mounted air conditioners.
- Easy to Install - Disassembly Leaving No Traces: The portable AC casement window seal is designed to be easy to install, without the need for window kits, hose adapters, or additional tools. It doesn't require any drilling into the window frame - just stick the, then stick the product, tie it with a fixed tie.The window can still be closed and open easily with the seal in place.And it can be easily removed and reused next year.
- Universal & Most Popular Go-to Choice: Supports single and dual-hose air conditioners. Suitable for bottom-hung windows, or skylights, it fits with most windows without any issues. Not Suitable for Sliding Windows, Vertical Push-pull Window, or Stereo Revolving Windows. Please PAY ATTENTION that any window with a perimeter longer than 400cm [157"] is not compatible with this product. BEFORE PURCHASING,Please Measure the length of your window to ensure a proper fit.
- Long-Lasting Durability for Over 3 Years: The casement window air conditioner seal is made of the latest translucent thickened air conditioning material, with 4 zipper settings, can be a very firmly fixed exhaust port, and sealed windows, to prevent pesky outdoor irritants and rainwater entry. The design of the makes it easy to disassemble, even if dirty. A gentle pull can be removed for washing/machine washing.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 322 g |
| Batteries required | No |
| Included components | ac window kit, ac window seal, sliding door air conditioner kit, window air conditioner installation kit, window venting kit for portable ac |

## Images

![Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） - Image 1](https://m.media-amazon.com/images/I/61vxx5wSE7L.jpg)
![Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） - Image 2](https://m.media-amazon.com/images/I/71neCTTzxUL.jpg)
![Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） - Image 3](https://m.media-amazon.com/images/I/71qQc+LUCaL.jpg)
![Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） - Image 4](https://m.media-amazon.com/images/I/716wsqDOwwL.jpg)
![Upgrade Portable AC Window Seal - Casement Window Air Conditioner Seal works with Mobile Air-Conditioning - Keep Hot Air Out - Keep House Cool, Easy to Install and Detachable-157"（400CM） - Image 5](https://m.media-amazon.com/images/I/71HTXm+ZPyL.jpg)

## Questions & Answers

**Q: Does this fit all types of windows？**
A: Yes, this seal kit is compatible with most window types, including casement, crank, push-out, and sliding windows. Please make sure the perimeter of your window is less than 400 cm (157 inches) for a proper fit.

**Q: Does it effectively block hot air and rain?**
A: Yes, the seal effectively blocks hot air from entering and prevents rainwater from getting in. The special TU fabric is waterproof and provides a tight seal around the exhaust hose, ensuring your room stays cool and dry.

**Q: Is it compatible with dual-hose portable AC units?**
A: Yes, this seal kit is compatible with both single and dual-hose portable air conditioners. It features a universal coupler and multiple zipper settings to fit a variety of hose sizes.

**Q: How easy is it to install and remove?**
A: The installation is simple and does not require any tools. You just need to apply the adhesive Velcro strips to the window frame, attach the seal cover, and zip it around the exhaust hose. For removal, simply unzip and detach the Velcro strips.

**Q: Will the adhesive leave residue when removed?**
A: No, the adhesive is designed to be removable without leaving any residue behind. It won’t damage your window or frame, so you can clean the area after removal.

## Frequently Bought Together

- 400CM (157") Portable AC Window Seal Kit for Casement Crank Skylight Windows, Newest Waterproof Insulated Window Vent Kit with Flexible Zipper Design for Single&Dual Hose Air Conditioners, No Drilling
- XFasten Transparent Window Weather Sealing Tape, 2-Inch x 30 Yards (50.8mm x 27.43m), Clear Window Draft Isolation Sealing Film Tape, No Residue
- BLACK+DECKER Smart Portable Air Conditioner, 12,000 BTU for Rooms up to 550 Sq. Ft., Smart Portable AC with Follow Me Remote and Window Kit, BPACT12WT, White

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**Shop now:** [https://www.desertcart.hr/products/540847828-upgrade-portable-ac-window-seal-casement-window-air-conditioner-seal](https://www.desertcart.hr/products/540847828-upgrade-portable-ac-window-seal-casement-window-air-conditioner-seal)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-07*