i have a wood stove that is sent up a fireplace flue using 8" stainless flex. when i installed it 6 yrs ago a local stove shop sold me 12' of this fabric to stuff around the flex pipe. then, i thought it was a life time supply, but brushing my chimney often i have run out. the stove shop can only get 200' rolls. i'll never live that long. does anyone know where i might get some by the foot? thanks!!