For a cast iron fireplace with damper, I measured 8 inches, ordered round 10 inches, but need more like 12-14 inches to really draught proof and insulate behind the loose fitting damper.

Found I had to fold it up after I had warm to room temp
Then it opened up to fit
And seal opening
It is working fine thank you

Really easy to fit. Much better than the pillows/ inflatables I’ve used in the past. Actually blocks the gap and stops the debris. Useful handles to manoeuvre into place.

Really useful amount of insulation that has come in really handy

Fits the chimney perfectly and the room felt warmer almost immediately. I've been looking for something to stop draughts and this works so well.

I love my trusted ironing board, but poor quality pads means the pattern of the metal of the board can come through to clothes with pressure & heat from the iron.
Not anymore. The Chimneysweep felt pad has been a revelation! What a difference. Amazing product. I highly recommend it. Well worth the money.
Ironing is so much easier

Saw this on Country File a couple of years ago and have finally bought one.
Took a bit of head scratching to choose the right one but it fits perfectly and was easy to fit. They are flexible enough to manoeuvre into piston and seal the chimney.

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Chimney Sheep draft excluder was very easy to fit and does a super job in eradicating the gale blowing down my chimney. Really toasty now. Would recommend to any prospective purchaser.

The 13"x13" chimney sheep fit perfectly in our Glasgow tenement chimney. It's noticeably warmer and quieter, even in recent storms. Very happy.

Bought this to try & fix the terrible draught in my new house. Cant believe what a difference it’s made. Really easy to fix & suddenly the room feels so much warmer & cosier. A really sound (& eco friendly) solution. Thanks ☺️

Very good quality product. I couldnt get a sheep to exactly match my chimney measurements so it was a bit of a squeeze getting it in , but now its fitted i have noticed a big difference in warmth of room.
No more draught coming down chimney and hearth is clean as its stopped soot coming down.
Also no more sooty rain splashes on carpet. Well pleased . Would highly recommend. Thank you

Bought a few rolls of this to reduce the health loss through sash windows.It works well with the chimney sheep that we’ve put in the rooms that needed them
Happy to recommend

2nd time buying this product and I love it. Both uses were to insulate an old redundant fire place, drafts instantly eliminated and I can crack on with my life. I have one of the removable chimney draft excluders for the fire place that I use and love that too! Definitely highly recommend. Prompt postage and I love that its eco friendly.

Great product, does just as it says. Drafts from the chimney are a thing of the past. Easy to use and store whilst fire place is in use and just pop it back in once the fire is out. I love it! I ordered a small and the space was even smaller but that's ok, the ends just bend round and it still is in place neat and tidy.