--- product_id: 267150295 title: "COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D)" brand: "cosfly" price: "€ 78.43" currency: EUR in_stock: true reviews_count: 1 url: https://www.desertcart.it/products/267150295-cosfly-indoor-air-conditioner-cover-ac-unit-covers-for-inside store_origin: IT region: Italy --- # Blocks drafts 21x15x3 in No tools needed COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) **Brand:** cosfly **Price:** € 78.43 **Availability:** ✅ In Stock ## Summary > Stay Cozy, Stay Smart! ❄️ ## Quick Answers - **What is this?** COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) by cosfly - **How much does it cost?** € 78.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/267150295-cosfly-indoor-air-conditioner-cover-ac-unit-covers-for-inside) ## Best For - cosfly enthusiasts ## Why This Product - Trusted cosfly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Fit:** Designed for window and wall-mounted AC units up to 21 inches. - • **Convenient Design:** Power cable access for seamless use. - • **Energy Efficiency:** Save on heating costs while keeping your space cozy! - • **Durable Protection:** Keeps dust and debris out, extending your AC's lifespan. - • **Hassle-Free Installation:** Slip it on in seconds—no tools required! ## Overview The COSFLY Indoor Air Conditioner Cover is a versatile and energy-efficient solution designed to fit window and wall-mounted AC units measuring up to 21 x 15 x 3 inches. Made from durable 210 D polyester/cotton, it effectively blocks cold drafts and prevents dust accumulation, ensuring your air conditioner remains in top condition. With easy installation and a convenient power cable access, this cover is a must-have for any homeowner looking to save on heating costs during the winter months. ## Description COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) ## Features - Cover Size - 21 x 15 x 3 inches (L x H x D). Fits Window Air Conditioner Units up to 19-21" x 13-15" x 3"(L x H x D). - Energy Saving - 210 D Polyester/cotton indoor ac cover blocks wind and cold air drafts from entering through air conditioners, cover inside window-mounted air conditioning unit and also can works for wall mounted units of suitable size. - Easy to Install - No tools required. Simply slip the cover over the air conditioner. The cover itself has an elastic that is placed around the front of the ac unit and a draw string on each side provides a snug fit to help keep cold drafts from coming through. - Convenient - In the lower right corner of the cover, there is a small hole for the air conditioning power cable to pass through. - Protects Your AC Unit - Prevents dust, dirt, and other small debris from clogging up your A/C unit when it's not in use. Reduce heating costs during winter, eliminate the need to remove and reinstall A/C unit. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SPKLR6X | | Batteries required | No | | Best Sellers Rank | #36,522 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #24 in Accessories (Home & Kitchen) | | Closure Type | Drawstring | | Customer Reviews | 4.5 4.5 out of 5 stars (11,673) | | Item Weight | 5 ounces | | Item model number | fr-wcurtain-10h-331 | | Manufacturer | COSFLY | | Product Dimensions | 21 x 15 x 3 inches | | UPC | 603981652383 | ## Product Details - **Brand:** COSFLY - **Color:** White - **Item Weight:** 0.14 Kilograms - **Material:** Polyester - **Water Resistance Level:** Not Water Resistant ## Images ![COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) - Image 1](https://m.media-amazon.com/images/I/61VnUBzPEHL.jpg) ![COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) - Image 2](https://m.media-amazon.com/images/I/51iB-mXXVPL.jpg) ![COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) - Image 3](https://m.media-amazon.com/images/I/6152zUxqouL.jpg) ![COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) - Image 4](https://m.media-amazon.com/images/I/51JZ77vupuL.jpg) ![COSFLY Indoor Air Conditioner Cover AC Unit Covers for Inside 21 x 15 x 3 inches (L x H x D) - Image 5](https://m.media-amazon.com/images/I/71TaCWS3fuL.jpg) ## Available Options This product comes in different **Size Name** options. ## Questions & Answers **Q: if i have less than 3 inches depth (flush wall ac) is this a viable option?** A: You'll need enough of the AC protruding for the cover to go over and pull tight, or enough space to fit it around the AC inside the wall. It will work with less depth but may slip off or not fit snugly without it. **Q: My ac measures 25 5/8" x 17" x 3". what size should i get?** A: My unit measured 25 x 16 x 3. It fits ok since they do have elastic to tighten cover. It is true to size so I think you would have problem with the cover It is a nice cover. Made well. . **Q: What if the hole for the outlet cord is on the wrong side of the cover?** A: In my opinion, you don’t necessarily need to use the little hole for the cord. I have never had one in previous air conditioner covers **Q: Product looks great....How do you insulate the expansion side panels ?** A: You can buy an additional item for the side panels. Search for something like: “window Air Conditioner Side Insulated Foam Panel Kit,” or “AC Units Insulation Panels” ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Effective! *by J***L on Reviewed in the United Kingdom on 8 January 2022* Effective insulation and looks neat/tidy! --- ## 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.it/products/267150295-cosfly-indoor-air-conditioner-cover-ac-unit-covers-for-inside](https://www.desertcart.it/products/267150295-cosfly-indoor-air-conditioner-cover-ac-unit-covers-for-inside) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-08*