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Flueblocker Wool Flue Plug, 5 to 6 in Round

A wool plug that stops cold drafts through an unused flue; it must come out before any fire.

Flueblocker Wool Flue Plug, 5 to 6 in Round

Flueblocker Wool Flue Plug, 5 to 6 in Round

A wool plug that stops cold drafts through an unused flue; it must come out before any fire.

Fits
5 to 6 in round flues
Material
100% Herdwick wool
Size
7.5 x 7.5 x 1 in
Origin
Made in England
Amazon reference
B09FYGB37F
EAN
0852586007047
  • Works with a broken damper
  • Natural wool
  • Must be removed before lighting

Best for: An unused fireplace or stove flue.

≈ $35
Check price on Amazon

Specifications

Fits
5 to 6 in round flues
Material
100% Herdwick wool
Size
7.5 x 7.5 x 1 in
Origin
Made in England
Amazon reference
B09FYGB37F
EAN
0852586007047

What the listing commits to

Flueblocker gives 100% Herdwick wool for year-round use in inactive fireplaces and stoves.

Using it

Put a reminder on the stove. Lighting a fire under a plug would fill the room with smoke and CO.

Questions this guide leaves you with

Can I leave it in over winter?

Only with a fireplace that will not be lit. Remove it before any fire.

Can it be used with gas logs?

No, the listing warns against use with an active vented gas log set.

The price on Amazon.com

This model is listed on Amazon.com, at ≈ $35 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.

Details checked on November 1, 2026.

Who buys this one, among flue dampers

An unused fireplace or stove flue.

Against the closest flue dampers on price

Same shelf, nearest prices. We list only specifications every stove states — gaps compare nothing.

Model Price Material
Flueblocker Wool Flue Plug, 5 to 6 in Round $35 100% Herdwick wool
XiHu BM0053-A Cast Iron Damper, 8 in $23 Cast iron
DYVBXS Stove Pipe Damper Section, 6 in $50 Stainless with powder coat
showingo BM0051-A Cast Iron Damper, 6 in $16 Cast iron, steel handle

Where the models diverge, in flue dampers

  • If price decides: showingo BM0051-A Cast Iron Damper, 6 in, at $16.

If this is not it: the rest of the flue dampers

Its value for money among flue dampers

At $35, it sits +52 % against the $23 median of the 5 models in this category published here.

Sources

Specifications: the manufacturer sheet for wood heating equipment and the matching Amazon product page. Prices, ratings and availability: read on Amazon.com from a New York address. Every figure on this page names its source.

How we assess these flue dampers

All flue dampers

The price beside each product is fetched as this page opens, and it is the only figure here that is current. Any amount written into the prose was read once, on the day that sentence was written, and nothing has refreshed it since.