Excellent post Alison! Whilst we favor sheet metallic, especially for trunk strains, massive duct methods might be exorbitantly pricey if carried out in all metal. There are times where flex duct (or sections of it) might help to lower expenses. In our retrofit function, we’d rather see a consumer that https://madbookmarks.com/story18034991/fire-resistant-ductwork-installers-things-to-know-before-you-buy