Round spiral duct forms the backbone of the most efficient means of creating a metal duct system. From initial planning through final installation and on to efficient operation by the customer, round ...

According to a study conducted by Lawrence Berkeley National Laboratory for the Department of Energy (DOE), duct leakage is the leading cause of energy inefficiencies in commercial buildings. On ...

Although "pop-up" hood scoops are by far the most popular plan for air grabbing, these alternate ducting arrangements offer additional low-profile advantages. Available from either hardware or ...