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 5"x14" Chimney - Draft Stopper Wool Fireplace Plug

Product ID: 199958372

Details

Brand
Flueblocker
Material
Wool
Maximum Gap Fill
14 inches
Product Dimensions
15"L x 6"W x
Unit Count
1 Count

🐑100% Herdwick wool, natural & renewable

♻️Reusable 10+ years, sustainable durability

✂️Trimmable for perfect custom fit

€ 100.04

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

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Description

🔥 Seal in warmth, block out the cold — wool power your fireplace! 🐑

CUSTOM FIT NO FUSS - Easily trim edges to perfectly seal your 8"x32" rectangular chimney flue—no tools or adhesives needed.
HERITAGE WOOL POWER - Crafted from dense Herdwick wool sourced in England for unmatched durability and eco-conscious warmth.
SEASONAL HEAT SAVER - Blocks drafts, odors, and heat loss, helping you cut energy bills and stay cozy all year long.
EFFORTLESS INSTALL REMOVE - Pressure fits snugly above the firebox; install or remove in seconds without any hardware.
ENERGY SMART TAX CREDIT ELIGIBLE - IECC 2009 compliant and may qualify for federal tax credits under the Inflation Reduction Act.

The Flueblocker is a premium, reusable chimney draft stopper made from 100% natural Herdwick wool. Designed for rectangular flues up to 8"x32", it offers a custom trimmable fit that blocks drafts, odors, and heat loss without tools or adhesives. Durable for over 10 years and backed by a 1-year warranty, it’s IECC 2009 compliant and may qualify for federal tax credits, making it an eco-friendly, cost-saving solution for wood-burning and unused fireplaces.

Specifications

ASIN	B0B3BL8SM9
Best Sellers Rank	#312,343 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #44 in Fireplace Chimney Caps
Brand	Flueblocker
Brand Name	Flueblocker
Customer Reviews	4.4 out of 5 stars 431 Reviews
Global Trade Identification Number	00852586007207
Item Dimensions L x W x Thickness	15"L x 6"W x 1"Th
Item Highlight	Herdwick Fiber, Made in England, 6"x15" Pad, Pressure Fit, No Tools, Trimmable, Damper Replacement, Balloon Alternative Item Highlight Herdwick Fiber, Made in England, 6"x15" Pad, Pressure Fit, No Tools, Trimmable, Damper Replacement, Balloon Alternative See more
Item Weight	12.8 ounces
Manufacturer	Chimney Sheep
Manufacturer Part Number	FB5X14REC
Manufacturer Warranty Description	1 year limited warranty.
Material	Wool
Material Type	Wool
Maximum Gap Fill	14 inches
Model Number	FB5X14REC
Number of Items	1
Number of Pieces	1
Product Dimensions	15"L x 6"W x 1"Th
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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

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€ 100.04

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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