6" x 11" Ventis Class-A All Fuel Chimney Painted Black Cathedral Round Ceiling Support - VACCR1106 latch kit and a 25-foot Vortex flexible

and a 25-foot Vortex flexible stainless steel liner

Fuel Source Electric Heating Element Single Infrared Heat Technology Medium Wave Installation Details Minimum Mounting Height 96" Lamping Details Standard Wattage 3000 Watts Product Details Finish Black Smart Compatible Smart Compatible Installation Options Wall

Dimensions:  26 1/4" H X 26 1/2" W X 16 1/2" D

which is why it got high marks in published comparison tests

7" L x x 20

6" x 11" Ventis Class-A All Fuel Chimney Painted Black Cathedral Round Ceiling Support - VACCR1106 latch kit and a 25-foot Vortex flexibleThis Ventis Class A ceiling support is UL 103 HT listed and engineered to carry the full weight of a vertical chimney run through a ceiling or cathedral ceiling penetration, while maintaining the required clearance to combustibles. Heavy gauge steel construction and a clean, painted black finish make it built to last and easy to install. 430 alloy stainless steel outer casing 0. 016" thickness 2" clearance to combustibles Outer wall is 2. 5" larger