---
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: "361 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "Tohonfoo"
url: https://www.desertcart.ro/products/740332320-21lx15hx3-5d-indoor-air-conditioner-cover-for-window-units-3
store_origin: RO
region: Romania
---

# Perfect 21x15x3.5in fit Velcro-secure seal 3-layer insulation shield 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:** 361 Lei
**Availability:** ✅ In Stock

## Summary

> ❄️ Seal the chill, save the bill — winter-proof your space in style!

## 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?** 361 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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

- • **Slash Heating Bills:** Keeps winter heat in and cold out, making your energy savings visible.
- • **Velcro Lockdown System:** Pre-sewn & adhesive velcro ensures airtight attachment, zero cold air leaks.
- • **Dual Closable Cord Ports:** Wire holes on both sides with sealable flaps prevent sneaky drafts.
- • **Triple-Layer Thermal Defense:** 600D Oxford + 2mm foam + aluminum foil block drafts like a pro.
- • **Tailored Fit for 6000-8000 BTU Units:** Precisely sized to snugly cover your indoor AC, no gaps, no fuss.

## Overview

This 21"x15"x3.5" indoor air conditioner cover features a robust three-layer insulation system combining waterproof 600D Oxford fabric, 2mm thick pearl cotton foam, and reflective aluminum foil. Designed to fit most 6000-8000 BTU window units, it uses a secure velcro attachment for a tight seal that blocks drafts and reduces heat loss. Dual closable cord holes add convenience and prevent cold air infiltration, making it an energy-efficient winter essential.

## Description

1

Review: 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: 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 |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Beige |
| Customer Reviews | 4.4 4.4 out of 5 stars (332) |
| Date First Available | 28 Sept. 2024 |
| Item Weight | 231 g |
| Item model number | HF-ACCI-21-15-3.5-BG |
| Manufacturer | TOHONFOO |
| Part Number | HF-ACCI-21-15-3.5-BG |
| Product Dimensions | 53.34 x 38.1 x 8.89 cm; 231 g |
| Size | 21x15x3.5in |

## 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/41FMxldM30L.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/41dYwUBuRbL.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/51Ck9TPYOQL.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/51RHSw+a-1L.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/51TJGG5wxVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***️ 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.

### ⭐⭐⭐⭐⭐ Review
*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!

### ⭐⭐ Review
*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.

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---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-26*