On 23/12/2020 01:22, wrote:
We have a large'ish open fire and I'm tempted to make, or to get made,
something to close-off the chimney when the fire isn't in use (which is
most of the time). Has anyone here done the same?

(Yes, I know I could fit a wood burner but it's a large fire in a formal
room and it just wouldn't look right - according to SWMBO)

This umbrella product was considered niche by the dragons, and laughed
off for the cost.
https://www.chimella.com/

Something fitted permanently would probably need to have safety
interlocks added, to avoid closing the chimmney if the fire is in use.

Why not close it for good, and install an LCD monitor and an infra-red
space heater?

--
Adrian C