Even though sheet steel and fiberboard ducts are rigid kinds of ductwork, flex ducts are tube-formed, insulated, and bendable. They’re ideal for oddly shaped or difficult Areas and will be hooked up to rigid ductwork linked to an air source. The uncovered spiral sheet metal HVAC ductwork being a key https://ductwork-installers78899.designi1.com/51777704/top-guidelines-of-ductwork-installers