--- product_id: 564947619 title: "The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow" brand: "the chimney balloon" price: "R1922" currency: ZAR in_stock: true reviews_count: 8 url: https://www.desertcart.co.za/products/564947619-the-chimney-balloon-21x10-max-2-ply-fireplace-draft-stopper store_origin: ZA region: South Africa --- # Reusable inflatable design Blocks drafts & odors year-round Fits 17"x7" to 21"x10" flues The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow **Brand:** the chimney balloon **Price:** R1922 **Availability:** ✅ In Stock ## Summary > 🎈 Seal the deal on comfort and savings—your chimney’s new best friend! ## Quick Answers - **What is this?** The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow by the chimney balloon - **How much does it cost?** R1922 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/564947619-the-chimney-balloon-21x10-max-2-ply-fireplace-draft-stopper) ## Best For - the chimney balloon enthusiasts ## Why This Product - Trusted the chimney balloon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Durable:** Deflates flat for storage, made from tough 2-ply fabric rated for 30+ uses across multiple seasons. - • **Year-Round Comfort:** Stops cold drafts in winter and blocks odors, noise, and debris in summer for a fresher home environment. - • **Effortless Inflation:** Inflate by mouth or pump with included 2-foot tube and 7-inch valve handle—quick setup, easy removal. - • **Perfect Fit, No Fuss:** Inflates snugly to seal rectangular flues from 17"x7" to 21"x10", no tools or modifications needed. - • **Energy-Smart Insulation:** Reduces heat loss through your chimney, helping lower energy bills and carbon footprint. ## Overview The Chimney Balloon 21x10 Max is a reusable, inflatable draft stopper designed to fit rectangular chimney flues between 17"x7" and 21"x10". It creates an airtight seal that blocks cold drafts, odors, noise, and debris year-round, improving home comfort and energy efficiency. Made from durable 2-ply fabric, it inflates easily with the included tube and valve, deflates for compact storage, and is safe for wood-burning fireplaces (not gas logs). A practical, no-hassle alternative to rigid chimney plugs. ## Description Cold air pouring down an unused chimney. That stale smoky smell drifting into the living room in July. Heat escaping straight up the flue. These are fixable problems, and THE CHIMNEY BALLOON 21x10 Max is the practical tool that fixes them. This 2-ply inflatable chimney plug air-seals rectangular flues from 17"x7" to 21"x10". Inflate it inside the flue above the damper and it expands into a snug, conforming seal against the flue walls. No hardware, no adhesives, no permanent modifications to your hearth or masonry. It is a reusable, inflatable alternative to rigid damper plates that conforms to your specific flue shape. The 2-ply poly membrane is rated for 30+ uses across 3-5 seasons and withstands -10°F to 120°F. A 1-year warranty from date of invoice is included. Leave it installed whenever the fireplace is not in use. In winter it blocks cold drafts and helps reduce heat loss by air-sealing the flue; install before the first freeze. In summer it blocks odors, outside noise, and debris from working down into the house. Ideal for homeowners with rarely used fireplaces in living rooms, dens, or bedrooms, and for energy-conscious households. Deflates flat for compact storage between seasons. Safety is straightforward: Always deflate and remove before lighting any fire. Cannot be used with an active gas log set; gas logs must be disabled or removed prior to installation. Inflate by mouth or air bed pump using the included 2-foot inflation tube and 7-inch handle valve. Check inflation periodically as routine care. Other sizes are available if your flue falls outside the 17"x7" to 21"x10" range. Honest design, practical results. ## Features - The 21×10 Chimney Balloon plugs a rectangular chimney flue that is between 17”x7” to 21”x10”. The handle valve is 7” long. Every Chimney Balloon draft stopper includes a two-foot-long inflation tube. - IMPORTANT - The Chimney Balloon chimney plug CANNOT BE USED in an active GAS LOG SET. For safety, a GAS LOG set would need to be DISABLED or REMOVED in order to use the Chimney Balloon fireplace plug. - WINTER - The Chimney Balloon fireplace draft stopper blocks cold fireplace drafts and smells from a chimney. Stops heat loss by acting as a chimney plug draft stopper that air seals and insulates. - SUMMER - In warmer weather the Chimney Balloon Chimney Pillow flue hole cover stops smoky odors, drafts, noise or debris from entering the home. - DIY - You can inflate the Chimney Balloon fireplace draft blocker by mouth or with an air bed pump. The fireplace balloon is easily deflated and removed when you are ready to use your fireplace. - The Chimney Balloon chimney blocker creates a chimney seal that prevents the fireplace from snorkeling in outside pollution, roof heat, and smoke from wildfires. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CJJPHPBB | | Best Sellers Rank | #191,372 in Home & Kitchen (See Top 100 in Home & Kitchen) #192 in Fireplace & Stove Accessories | | Brand Name | THE CHIMNEY BALLOON | | Color | White | | Customer Reviews | 3.9 3.9 out of 5 stars (60) 3.9 out of 5 stars | | Global Trade Identification Number | 00852586007597 | | Item Dimensions L X W X Thickness | 21"L x 10"W x 10"Th | | Item Type Name | Chimney Pillow | | Item Weight | 8 ounces | | Manufacturer | Chimney Balloon | | Manufacturer Part Number | CBM21X10 | | Material Type | Inflatable Fabric | | Maximum Gap Fill | 21 inches | | Model Number | CBM21X10 | | Number Of Items | 1 | | Number Of Pieces | 1 | | Unit Count | 1 Count | ## Product Details - **Brand:** THE CHIMNEY BALLOON - **Color:** White - **Material:** Inflatable Fabric - **Maximum Gap Fill:** 21 inches - **Product Dimensions:** 21"L x 10"W x 10"Th ## Images ![The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow - Image 1](https://m.media-amazon.com/images/I/417awJHgipL.jpg) ![The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow - Image 2](https://m.media-amazon.com/images/I/61iX+GSsKsL.jpg) ![The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow - Image 3](https://m.media-amazon.com/images/I/41WUaxllivL.jpg) ![The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow - Image 4](https://m.media-amazon.com/images/I/519swAOktnL.jpg) ![The Chimney Balloon 21x10 Max 2-Ply Fireplace Draft Stopper - Flue Plug | Inflatable Damper Alternative, Rectangular Fit Range, Reusable, Year-Round Blocker, Cold Air Insulation, Chimney Pillow - Image 5](https://m.media-amazon.com/images/I/41VfJbbBgwL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good to stop that winter wind and helps keep that warm heat inside your living area *by on Reviewed in the United States January 30, 2026* The insulation was a breeze if fit right up the chimney flute was pretty easy to inflate with the air mattress inflatable. I have had no issues with durability or functionality. I can definitely feel the difference with no draft coming in being that is by my couch. The material seemed of thicker durability. And inflate to the right size to keep a good air seal. ### ⭐⭐⭐⭐ Good quality *by on Reviewed in the United States December 23, 2025* Has done a great job stopping the draft in my uncapped fire place. Is deflating some and seems like I will have to reinflate a little more frequently than expected. ### ⭐⭐⭐⭐⭐ Easy to install and remove, great insulation. *by on Reviewed in the United States December 3, 2025* seals off my chimney during the hot summers here in Arizona helps reduce my cooling bill, and helps in the winter when I need to keep out the cold, easy to install and remove when I want to use my fireplace for a nice fire. This is my second one I have bought lasted about six years. Worth the price. ## Frequently Bought Together - Chimney Balloon 21x10 Max 2-Ply Inflatable Chimney Pillow Fireplace Draft Stopper, Fireplace Cold Air Blocker, Works Better Than a Chimney Flue Cover Plate Damper as a Fireplace Blocker - Chimney Balloon® 23" Valve/Handle Extension (for Use with Any Size --- ## 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.co.za/products/564947619-the-chimney-balloon-21x10-max-2-ply-fireplace-draft-stopper](https://www.desertcart.co.za/products/564947619-the-chimney-balloon-21x10-max-2-ply-fireplace-draft-stopper) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-16*