Abstract: An exhaust flue support apparatus made up of an elongate flue mounting plate defining a first flue access hole with at least one contiguous strapping-tab extending into the flue access hole, the mounting plate incorporating at least two longitudinal, spaced-apart, strengthening beads; a securing strap having a length capable of inscribing the first flue access hole; a centering plate providing an elongated flue access hole; and a butting plate having a V-shaped edge, the securing strap, centering plate and butting plate formed from a single sheet of metal with tabs for easily breaking the securing strap, centering plate and butting plate away from the mounting plate.