The component in question refers to a duct or passage within a chimney, designed to vent exhaust gases from a heating appliance or fireplace. Historically, it was sometimes constructed using materials containing... Read more »
These components were once commonly utilized as venting systems for furnaces, water heaters, and other appliances. Constructed with a metal outer layer and an asbestos-containing inner lining, they provided insulation and protection... Read more »
A structure formerly prevalent in heating systems utilized a specific mineral fiber for its heat-resistant properties. This component, often found venting combustion byproducts from furnaces and appliances, posed significant health risks due... Read more »