I've been paying attention to
the caulk section of building supply stores since this project began
and have observed only two choices when it comes to fire barrier caulk.
We used DAP
on the first stove. It
got the job done but was very stiff to work with. A salesman at the
store who helped us that day advised a liberal coat of water to loosen
it up so you could shape it into the areas you need. The color is black.
The second stove involved a
3M product that was much easier to work with but had a red tint to it,
which is no problem for me but might be an issue for someone concerned
with a color scheme.