This was a renovation project of an existing building. We provided and installed all round duct, rectangular duct, flex duct, spiral duct, collars, hangers, straps, canvas connectors, taps, and air devices. Installed a new inline exhaust fan into the existing duct. We tied in all the new ductwork to existing rooftop unit. Inspected the existing drain lines, controls and outside air and rooftop unit.