Here at WT Knowles, we are often asked about clay chimney cowls. It might surprise you that there is more to learn than you would think. Before we talk about clay chimney cowls, let’s start off with what chimney cowls really are. What is a cowl on a chimney? Chimney http://claychimneycowls34566.worldblogged.com/15965202/clay-chimney-cowls