How do I determine the correct size for my fireplace flue?

Measure your flue's interior and choose a Flueblocker the same size or slightly larger. The wool pad pressure-fits and can be trimmed with scissors. Use the sizing guide to match your flue shape—round, square, or rectangular.

How difficult is installation? Do I need any special tools or supports?

Choose an install spot you can reach by hand. Measure with a tape or ruler. A narrow area above the firebox is ideal. For higher spots, use 6” handle extenders to place the wool pad securely.

Will the product completely block cold drafts, odors, and heat loss?

When fitted correctly, the FlueBlocker stops heating/cooling loss, drafts and odors from a dormant chimney. To eliminate odor, make sure you vacuum out all the ash from the firebox and seal any ash chute or outside intake attached to the firebox.

Which is right for my situation – a FlueBlocker or a Chimney Balloon?

The Flueblocker is a durable, reusable chimney plug that handles moisture and is ideal for long-term use. The Chimney Balloon offers a tight seal and a breakaway feature for safety if a fire is lit accidentally.

How durable is the material? Is it worth the price?

Chimney is harsh, moist, acidic environments. The Flueblocker uses coarse ionized Herdwick wool and durable resin hardware to seal air, wick moisture and resist odors. Chimney Balloons use a heat-reactive laminate to withstand chimney air conditions.

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Flueblocker for a 8"x32" Chimney - Draft Stopper Wool Fireplace Plug

Flueblocker for a 8"x32" Chimney - Draft Stopper Wool Fireplace Plug

Product ID: 199958372

Details

Brand
Flueblocker
Material
Wool
Maximum Gap Fill
32 Inches
Number of Pieces
1
Unit Count
1.0 Count

🐑100% Herdwick wool - natural & renewable

♻️Reusable 10+ years durability

✂️Trimmable edges for custom fit

B/.353

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Seal the chill, save the thrill! 🐑

BUILT TO LAST - With a decade-plus lifespan and a 1-year warranty, this plug is your long-term solution to chilly, drafty fireplaces.
SUSTAINABLE WARMTH - Crafted from heritage Herdwick wool, this eco-friendly plug blocks drafts while reducing your carbon footprint.
EFFORTLESS INSTALLATION - No tools or adhesives needed—just press in place and enjoy instant draft protection all season long.
PERFECT FIT EVERY TIME - Easily trim the Flueblocker to snugly seal rectangular flues up to 8"x32", ensuring maximum heat retention.
ENERGY SAVINGS THAT PAY OFF - IECC 2009 compliant insulation that can slash heat loss and potentially earn you federal tax credits.

The Flueblocker is a premium, reusable chimney draft stopper made from 100% natural Herdwick wool sourced in England. Designed to fit rectangular flues up to 8"x32", it blocks cold drafts, odors, and heat loss without tools or adhesives. Durable for over 10 years and compliant with energy codes, it offers an eco-conscious, cost-saving solution for wood-burning and unused fireplaces.

Specifications

ASIN	B019736TCS
Best Sellers Rank	#294,366 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #30 in Fireplace Chimney Caps
Brand	Flueblocker
Brand Name	Flueblocker
Customer Reviews	4.4 out of 5 stars 427 Reviews
Item Dimensions L x W x Thickness	33"L x 9"W x 1"Th
Item Highlight	Herdwick wool, made in England, flue blocker, trimmable fit, reusable 10+ years, works with or without damper Item Highlight Herdwick wool, made in England, flue blocker, trimmable fit, reusable 10+ years, works with or without damper See more
Manufacturer	Chimney Sheep
Manufacturer Part Number	FB8X32REC
Manufacturer Warranty Description	1 year limited warranty.
Material	Wool
Material Type	Wool
Maximum Gap Fill	32 inches
Model Number	FB8x32
Number of Items	1
Number of Pieces	1
Product Dimensions	33"L x 9"W x 1"Th
UPC	712038069620
Unit Count	1 Count

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B/.353

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews