How do you measure the size needed?

I found it a bit tricky. You need to get inside the fireplace as far as you can to measure where the chimney narrows. I think I used a piece of string and then measured the string. There is a guide on the website to show which one to buy given your dimensions. I would go for the biggest size suggested. The Sheep will squash into the hole so it's not an issue if it's on the bigger side. I've had to remove my Sheep recently because I'm tiling the inside of the fireplace and the temperature drop in the room is noticeable so I can recommend it as a draught excluder

My chimney is 8 inch square. Should I buy a 12 inch round or a 13 inch square sheep?

12 inch or it may be difficult to shove it up the hole

My flue is 9 inches x 9 inches. Will the 13 x 13 square be too big and, if so, how would I cut it down to size, i.e. would it could with scissors?

It needs to be bigger all around, than the hole by a couple of inches as in the description. It says you can cut it down,scissors should do it. I believe it should be ok for you. Make a paper template 2 inches bigger than your hole first to try for fit remembering that the excess will point up once pulled into place. Hope that helps. I find it works great, no more draughts.

I want to use an electric fire for the duration of the winter in the chimney. Is this safe to do either sheep in place? The electric fire is partially

I have an electric fire in place and it’s fine , the chimney sheep should be fire retardant

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Chimney Sheep 13 x 13 Inch Herdwick Wool Chimney Draught Excluder

Chimney Sheep 13 x 13 Inch Herdwick Wool Chimney Draught Excluder

Product ID: 50740647

Details

Brand
Chimney Sheep
Colour
Grey
Material
Wool
Maximum gap fill
12 Inches
Number of Packs
1

🌿Made from breathable, natural wool

📏Fits 8-12 inch chimneys snugly

🔥Blocks 95% airflow, retains heat

€ 97.65

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🐑 Seal the warmth, silence the chill, and save smartly!

NOISE NINJA - Silences howling winds and outdoor noise for a peaceful, cozy home vibe.
ENERGY BILL SLAYER - Cuts heat loss by 5%, saving you around £60 annually on heating costs.
NATURAL WOOL POWER - Breathable Herdwick wool blocks drafts without trapping moisture—no damp worries here.
PERFECT FIT EVERY TIME - Compresses to seal chimneys 8-12 inches square, ensuring zero wasted warmth.
WILDLIFE DEBRIS DEFENDER - Keeps critters and soot out, protecting your hearth and sanity.

The Chimney Sheep 13 x 13 Inch Chimney Draught Excluder is a premium, natural wool plug designed to fit chimneys 8-12 inches square. It blocks 95% of airflow to prevent heat loss and cold drafts, reduces wind noise, and stops debris and wildlife from entering your chimney. Easy to insert and remove with its handle, it offers a breathable, moisture-safe solution that can save around £60 per year on energy bills while lowering your carbon footprint. Durable and moth-proof, it’s a cost-effective upgrade for a warmer, quieter, and more energy-efficient home.

Specifications

ASIN	B00SEL5VXS
Best Sellers Rank	20,201 in DIY & Tools ( See Top 100 in DIY & Tools ) 116 in Fireplace Accessories
Brand Name	Chimney Sheep
Colour	Grey
Country Of Origin	United Kingdom
Customer Reviews	4.5 4.5 out of 5 stars (672)
Global Trade Identification Number	00700115980418
Included Components	Chimney Sheep 13 x 13 inch Chimney Draught Excluder
Item Highlight	Fits Openings 8-12in Each Way, Breathable Herdwick Felt, Lifts Out in Seconds
Item Type Name	Chimney Draught Excluder
Item Weight	0.75 Pounds
Manufacturer	Chimney Sheep Ltd
Manufacturer Part Number	CA007
Material Type	Wool
Maximum Gap Fill	12 Inches
Model Number	CA007
Number of Items	1
Number of Packs	1
Number of Pieces	1
UPC	700115980418

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€ 97.65

Duties & taxes included

In stock

Sold byAmazon FinlandDelivered 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 Finland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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1 week ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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