Anyone got one? Anyone found any better/DIY options? Noticed how severe the updraught is when I happened to hold a large piece of polystyrene sheet near it and pinged against the opening like it was magnetic. As our fire is pretty much entirely for show and occasionally curling up next to we rarely use it (but would like to occasionally), so I'm thinking of blocking it up in a temporary fashion, though £25 for a bit of plastic* seems steep.
*OK it's a bit more complex than that, but not much.

