Copperfield Chimney 5" 316L Insulated All Fuel Chimney Tee with CoverThis insulated tee provides a solid and secure connection from your appliance to the rest of your chimney system. Features 316L alloy stainless steel inner wall, 430 alloy stainless steel outer casing 0. 016" thickness 2" clearance to combustibles Outer wall is 2. 5" larger than inner wall Clean, smooth exterior finish Less likely to corrode Provides smooth and efficient airflow Secure, tight connection prevent leaks and drips Specifications Model