Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design. The System Design and Installation Guide is an additional resource.
A ceiling support assembly is used when a chimney is installed in a flat ceiling. Available in a black finish, the 6" and 8" sizes fit between regular 16" O.C. ceiling joists, and are cartoned with a stainless steel black single-wall adapter. (For exposed-beam ceiling installations, use Roof Support Assembly.)
|6HS-CSA||6"||3"||6"||14 1/4" sq.|
|8HS-CSA||8"||3"||2"||14 1/4" sq.|