flue shut-off in boiler connection to chimney
Posted by H Zimmer on October 10, 19100 at 14:59:05:
Where do I find a flue shut-off for a 9" flue? I may not be calling this device by the correct name but I know they exist. This is for an old oil-fired hot water boiler and I'm hoping to improve the units efficiency by automatically closing off the flue pipe after the unit shuts down.

Thanks


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