to seven and eleven sixteenths 7 11 16 inches in a preferred embodiment the outer diameter of disc 310 is substantially equal to sixteen 16 inches and the outer diameter of discs 320 is substantially equal to sixteen and three quarters 16 u00be inches the diameters of discs 310 320 is such that liner adapter 130 is adapted to be used with different chimney systems having different sized outer walls 180 the band 330 is formed from a substantially rectangular strip of metal preferably stainless steel to form a cylinder the length of band 330 corresponds to the exterior radius of the disc 310 in a preferred embodiment the height of the band 330 is substantially equal to one and one half 1 u00bd inches the band 330 may also have a flange 332 extending from one end of the cylinder being formed away from the exterior the flange 332 is approximately one quarter u00bc inch in the radial direction the collar 340 is substantially cylindrically shaped having on one end a small flange projecting away from and substantially perpendicular to the exterior wall of the collar 340 in a preferred embodiment the collar 340 is formed of stainless steel the diameter of the collar 340 is substantially equal to the respective diameters of the apertures 352 356 of the discs 310 320 in a preferred embodiment the length of the collar 340 is substantially equal to five and one half 5 u00bd inches and the flange is approximately one quarter u00bc inch in length as noted above however the present invention should not be limited to the details of the illustrated embodiments the mesh support 350 or standoff may be formed from rectangularly shaped metal.