Abstract: A vent connection assembly for use in the installation of a vent on an exterior wall of a building and interconnection with a conduit in the interior of the building, including a first plate having a diameter smaller than the diameter of the vent, a second plate having a diameter smaller than the diameter of the vent, a deformable member defining a periphery, the deformable member having a diameter smaller than the diameter of the vent and being positioned between the first plate and the second plate, and a mechanism for drawing said first plate and said second plate together after said deformable member has been inserted into the vent, thereby deforming said deformable member and extending said deformable member radially to frictionally engage the vent. A method of installing a vent on an exterior wall of a building and connecting the vent to conduit within the interior of a building using the vent connection assembly.