wood stove piping for the house

[Triple Threat]

was wondering about what size should be used for the pipe going to the roof. Crapytire has the 6" or 7" or is there better stuff to use. This is the insulated pipe I'm looking for. thanks any help would be great.

[oreo]

you should stick with the same size pipe that your stove calls for.you will end up with less complications when trying to hook your black pipe to your insulated pipe.