--- product_id: 740332320 title: "21\"Lx15\"Hx3.5\"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige" brand: "tohonfoo" price: "¥9434" currency: JPY in_stock: true reviews_count: 5 category: "Tohonfoo" url: https://www.desertcart.jp/products/740332320-21lx15hx3-5d-indoor-air-conditioner-cover-for-window-units-3 store_origin: JP region: Japan --- # Fits 6000-8000 BTU units (21"x15"x3.5") Velcro closure ensures airtight seal 3-layer insulation blocks drafts 21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige **Brand:** tohonfoo **Price:** ¥9434 **Availability:** ✅ In Stock ## Summary > ❄️ Keep the chill out and your cozy vibes in — winter-proof your space now! ## Quick Answers - **What is this?** 21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige by tohonfoo - **How much does it cost?** ¥9434 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/740332320-21lx15hx3-5d-indoor-air-conditioner-cover-for-window-units-3) ## Best For - tohonfoo enthusiasts ## Why This Product - Trusted tohonfoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Secure Velcro Seal:** Pre-sewn and adhesive-backed velcro locks out cold air - • **Energy-Smart Savings:** Blocks drafts to reduce winter heating costs effectively - • **Triple-Layer Defense:** 600D Oxford + 2mm foam + aluminum foil for max insulation - • **Dual Closable Cord Ports:** Two wire holes with closures prevent unwanted drafts - • **Tailored Fit for Your AC:** Designed to snugly fit most 6000-8000 BTU window units ## Overview The TOHONFOO Indoor Air Conditioner Cover features a durable 3-layer insulation system combining waterproof 600D Oxford fabric, 2mm thick foam, and reflective aluminum foil. Sized at 21"L x 15"H x 3.5"D, it fits most 6000-8000 BTU window AC units. Equipped with secure velcro closures and dual closable cord holes, it effectively blocks drafts and moisture, helping reduce heating costs during colder months. ## Description 1 Review: No More DIY - I'm from the Midwest and it gets COLD in the winter. I have tried several DIY options to keep the draft and moisture out due to having my air conditioners. This is great. We've had some chilly nights recently and I'm just getting prepared for the fall/winter. So far So Good. Snug fit, no moisture, keeps heat in. Review: Cuts Drafts from Small A/C - This is a great cover for a small air conditioner. Packing it underneath with foam and weatherstrip tape, it already has an aluminum lining that probably helps with cutting down any draft. Has velcro, so while it is not a custom fit, it fits neatly around the a/c and keeps the room warmer. Takes some work, but worth it! ## Features - 【Three Layers Of Insulation To Block Drafts】Unlike other single-layer covers, Tohonfoo window air conditioner cover use a three-layer structure: 600D waterproof heavy duty oxford material, 2mm thickened pearl cotton, insulated aluminum foil. - 【Perfect Fit】The inner size of the indoor air conditioner cover is 21"Lx15"Hx3.5"D, fitting most of 6000-8000BTU window air conditioners or indoor AC unit size of 19"-21"x 13"-15" x 3"(L x H x D). Note: Please measure your unit before purchasing. - 【Velcro Make the Cover Stick Better】Our air conditioner cover for inside comes with pre-sewn velcro and adhesive-backed velcro for quick and secure attachment to your window air conditioner, ensuring a tight seal with no cold air leakage. - 【Reduce Heating Costs】The AC covers for inside wall unit will effectively block any wind and cold air from entering into the room to ensure that there is no heat loss, which can prevent heat loss in the winter to reducing heating costs. - 【Two Closable Cord Holes】Unlike many air conditioner covers that only have one wire hole, we have wire holes on both sides, and our wire holes can be closed to avoid drafts through the wire holes. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D9MF55PZ | | Brand | TOHONFOO | | Closure Type | Hook & Loop | | Closure type | Hook & Loop | | Colour | Beige | | Customer Reviews | 4.4 out of 5 stars 415 Reviews | | Item Type Name | Air Conditioner Cover Indoor | | Item Weight | 0.23 Kilograms | | Item weight | 0.23 Kilograms | | Manufacturer | TOHONFOO | | Model Number | HF-ACCI-21-15-3.5-BG | | Number of items | 1 | | Part Number | HF-ACCI-21-15-3.5-BG | | Strap Type | Velcro strap | | Water Resistance Level | Water Resistant | | Water resistance level | Water Resistant | ## Product Details - **Brand:** TOHONFOO - **Closure type:** Hook & Loop - **Colour:** Beige - **Item weight:** 0.23 Kilograms - **Water resistance level:** Water Resistant ## Images ![21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige - Image 1](https://m.media-amazon.com/images/I/81xdIne70xL.jpg) ![21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige - Image 2](https://m.media-amazon.com/images/I/71V2l2lscTL.jpg) ![21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige - Image 3](https://m.media-amazon.com/images/I/71QNaDvIt5L.jpg) ![21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige - Image 4](https://m.media-amazon.com/images/I/71yUu96NKcL.jpg) ![21"Lx15"Hx3.5"D Indoor Air Conditioner Cover for Window Units, 3 Layers Insulation AC Cover for Inside Wall Unit with Aluminum Foil and 2mm Foam, Windproof Window Air Conditioner Cover Inside, Beige - Image 5](https://m.media-amazon.com/images/I/71W6abs5gVL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ No More DIY *by J***. on 19 October 2024* I'm from the Midwest and it gets COLD in the winter. I have tried several DIY options to keep the draft and moisture out due to having my air conditioners. This is great. We've had some chilly nights recently and I'm just getting prepared for the fall/winter. So far So Good. Snug fit, no moisture, keeps heat in. ### ⭐⭐⭐⭐⭐ Cuts Drafts from Small A/C *by M***R on 30 December 2025* This is a great cover for a small air conditioner. Packing it underneath with foam and weatherstrip tape, it already has an aluminum lining that probably helps with cutting down any draft. Has velcro, so while it is not a custom fit, it fits neatly around the a/c and keeps the room warmer. Takes some work, but worth it! ### ⭐⭐ needs better designing *by X***O on 12 October 2024* This cover will not fit my a/c unit. It's a wall unit. The cord has no place to go with where it is positioned. It is a good idea overall, but it needs some design work. --- ## 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.jp/products/740332320-21lx15hx3-5d-indoor-air-conditioner-cover-for-window-units-3](https://www.desertcart.jp/products/740332320-21lx15hx3-5d-indoor-air-conditioner-cover-for-window-units-3) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-27*