Fantastic submit Alison! While we desire sheet steel, specifically for trunk traces, big duct units might be exorbitantly pricey if done in all steel. There are times the place flex duct (or sections of it) may also help to lessen expenditures. Within our retrofit operate, we’d somewhat see a purchaser https://advicebookmarks.com/story25677144/new-step-by-step-map-for-kitchen-extract-ventilation