--- product_id: 497870203 title: "IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners" price: "$60.87" currency: USD in_stock: true reviews_count: 10 url: https://www.desertcart.us/products/497870203-ikstar-portable-ac-window-seal-kit-400cm-157-for-casement store_origin: US region: United States of America --- # Fits up to 400CM (157") window perimeter Adjustable zipper for any hose position No-drill, tool-free installation IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners **Price:** $60.87 **Availability:** ✅ In Stock ## Summary > ❄️ Seal the deal on cool comfort—no drills, no hassle, just chill. ## Quick Answers - **What is this?** IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - **How much does it cost?** $60.87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/497870203-ikstar-portable-ac-window-seal-kit-400cm-157-for-casement) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Weatherproof:** Crafted from waterproof, UV-resistant fabric to keep out rain, dust, and pests. - • **Flexible Zipper Design:** Customize hose placement effortlessly for a perfect, airtight seal every time. - • **Universal Compatibility:** Seamlessly fits casement, crank, push-out & skylight windows up to 157" perimeter. - • **Boost Cooling Efficiency:** Prevents warm air intrusion to maximize your AC’s performance and energy savings. - • **Quick & Damage-Free Setup:** Install in minutes with adhesive Velcro—ideal for renters and seasonal use. ## Overview The IKSTAR Portable AC Window Seal Kit is a versatile, no-drill solution designed to fit multiple window types up to 400CM perimeter. Featuring an adjustable zipper for flexible hose positioning, it enhances cooling efficiency by sealing out warm air and outdoor elements. Made from durable, waterproof, UV-protected fabric, it installs quickly with adhesive Velcro, making it perfect for renters and seasonal use. ## Description Product description Will this fit my casement or crank-out window? Yes. It is designed for casement, crank-out, push-out, skylight and other non-sliding windows. Please measure your window before ordering. Will this fit my casement or crank-out window? Yes. It is designed for casement, crank-out, push-out, skylight and other non-sliding windows. Please measure your window before ordering. How do I choose between the 300CM and 400CM size? Measure the total perimeter of your window frame. Choose 300CM for up to 118", and 400CM for up to 157". Pick the closest larger size. How do I choose between the 300CM and 400CM size? Measure the total perimeter of your window frame. Choose 300CM for up to 118", and 400CM for up to 157". Pick the closest larger size. Can it work with single hose and dual hose portable AC units? Yes. The adjustable zipper opening works with both single and dual hose portable air conditioners, as well as many dehumidifiers and tumble dryers. Can it work with single hose and dual hose portable AC units? Yes. The adjustable zipper opening works with both single and dual hose portable air conditioners, as well as many dehumidifiers and tumble dryers. Do I need tools or drilling to install it? No tools or drilling required. Clean the frame, apply the hook tape, attach the seal, place the hose through the zipper, and close it around the hose. Do I need tools or drilling to install it? No tools or drilling required. Clean the frame, apply the hook tape, attach the seal, place the hose through the zipper, and close it around the hose. Does it help keep hot air from coming back inside? Yes. It helps seal the open window area around the exhaust hose, reducing hot air backflow and supporting more efficient summer cooling. Does it help keep hot air from coming back inside? Yes. It helps seal the open window area around the exhaust hose, reducing hot air backflow and supporting more efficient summer cooling. Review: Works! - Not easy to figure out how to use an ac unit in a window like this! We have an old house so these crank completely out. So both sides need to be sealed. It wasn’t difficult to install, just use the adhesive to apply all around the window frame and then velcro the plastic pieces together. It doesn’t look the most attractive from the outside but it’s better than dying of heat! There’s normally No leakage but if there is a heavy rain, the way it seals together on the top of the window creates a pocket… so it will start to get filled with water and can leak down the sides a bit. How to solve that is to raise it up making a pitch in the plastic so it drains off the sides so it won’t collect there. The zipper opens large enough to attach the hose through. It really is the best solution for this weird type of window. Ok, the only one! Haha Review: Functional! - The one I bought was a bit too long. But it’s okay! Still functional. I bought this because the tape and box around my window didn’t look nice and it’s not weather proof. I like the flexibility of this item because if it rains all I have to do is remove it from the stick on Velcro and then re-apply again later if I want. Functionality: I like that it’s somewhat rain proof, and you can remove anytime and reapply if needed Stickiness: Make sure you follow instructions and clean your window seal well. Or else the Velcro adhesive will not stick. ## Features - ✅【Designed for Casement, Crank-Out & Skylight Windows】This portable AC window seal kit is designed for casement, crank-out, push-out and skylight windows where standard sliding window panels may not fit. It fits window perimeters up to 400CM / 157" and offers a practical window vent solution for non-sliding window types. - 🌟【Fits Single & Dual Hose Portable Air Conditioners】The adjustable zipper opening works with single and dual hose portable air conditioners, making it easier to position the exhaust hose at different heights. A flexible portable AC window vent kit for a cleaner setup than rigid window panels with fixed hose ports. - ❄️【Helps Reduce Hot Air Backflow for Better Cooling】By sealing the open window area around the exhaust hose, this portable air conditioner window seal helps reduce warm outdoor air from flowing back inside. It supports more efficient cooling and helps keep your room more comfortable during hot weather. - 🔨【No-Drill Installation for Apartments & Seasonal Use】Install this AC window seal kit without drilling or special tools. Simply clean and dry the window frame, apply the hook tape, attach the seal, place the hose through the zipper opening, and tighten around it. A convenient choice for apartments, renters, bedrooms and home offices. - 🌝【Measure Before Ordering for the Best Fit】This 400CM / 157" window seal is best suited for clean, smooth window frames and seasonal portable AC use. Please measure your window before ordering to ensure the correct fit. A more adjustable alternative to cardboard or tape DIY setups for casement and crank windows. ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #29,952 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #34 in Accessories (Home & Kitchen) | | Customer Reviews | 4.3 out of 5 stars 3,772 Reviews | ## Images ![IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - Image 1](https://m.media-amazon.com/images/I/61vxx5wSE7L.jpg) ![IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - Image 2](https://m.media-amazon.com/images/I/71MPzjgcCVL.jpg) ![IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - Image 3](https://m.media-amazon.com/images/I/7136L7lPclL.jpg) ![IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - Image 4](https://m.media-amazon.com/images/I/71isfDnqRsL.jpg) ![IKSTAR Portable AC Window Seal Kit 400CM/157 for Casement, Crank-Out & Skylight Windows, No-Drill Window Vent Kit with Adjustable Zipper, Fits Single & Dual Hose Portable Air Conditioners - Image 5](https://m.media-amazon.com/images/I/71OYSqt8sTL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Will this fit my casement or crank-out window?** A: Yes. It is designed for casement, crank-out, push-out, skylight and other non-sliding windows. Please measure your window before ordering. **Q: How do I choose between the 300CM and 400CM size?** A: Measure the total perimeter of your window frame. Choose 300CM for up to 118", and 400CM for up to 157". Pick the closest larger size. **Q: Can it work with single hose and dual hose portable AC units?** A: Yes. The adjustable zipper opening works with both single and dual hose portable air conditioners, as well as many dehumidifiers and tumble dryers. **Q: Do I need tools or drilling to install it?** A: No tools or drilling required. Clean the frame, apply the hook tape, attach the seal, place the hose through the zipper, and close it around the hose. **Q: Does it help keep hot air from coming back inside?** A: Yes. It helps seal the open window area around the exhaust hose, reducing hot air backflow and supporting more efficient summer cooling. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works! *by T***K on October 14, 2025* Not easy to figure out how to use an ac unit in a window like this! We have an old house so these crank completely out. So both sides need to be sealed. It wasn’t difficult to install, just use the adhesive to apply all around the window frame and then velcro the plastic pieces together. It doesn’t look the most attractive from the outside but it’s better than dying of heat! There’s normally No leakage but if there is a heavy rain, the way it seals together on the top of the window creates a pocket… so it will start to get filled with water and can leak down the sides a bit. How to solve that is to raise it up making a pitch in the plastic so it drains off the sides so it won’t collect there. The zipper opens large enough to attach the hose through. It really is the best solution for this weird type of window. Ok, the only one! Haha ### ⭐⭐⭐⭐⭐ Functional! *by J***E on June 18, 2025* The one I bought was a bit too long. But it’s okay! Still functional. I bought this because the tape and box around my window didn’t look nice and it’s not weather proof. I like the flexibility of this item because if it rains all I have to do is remove it from the stick on Velcro and then re-apply again later if I want. Functionality: I like that it’s somewhat rain proof, and you can remove anytime and reapply if needed Stickiness: Make sure you follow instructions and clean your window seal well. Or else the Velcro adhesive will not stick. ### ⭐⭐⭐⭐ Good Product Flexible Application *by R***N on July 3, 2025* The graphic on the ad implies there is a fixed form to insert two hoses. Actually it's just a series of zippers that lets you place the hoses in a convenient way. It does keep out moisture - as long as you make sure that the seal is tight on the tape side and the velcro side. Using the supplied zip ties helps to secure the zipper around the end of the hose, but self-sealing velcro tape wrapped around the end of the zipper to cover any opening helps to keeps insects out, and is less expensive to replace than zip ties. Reasonably priced, useful instructions and videos, likely to last several seasons. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/497870203-ikstar-portable-ac-window-seal-kit-400cm-157-for-casement](https://www.desertcart.us/products/497870203-ikstar-portable-ac-window-seal-kit-400cm-157-for-casement) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-15*