Maximize the space in close quarters, such as inside walls and ceilings. As rectangular duct sizes increase, they get wider but not taller. This shape is most often used for heating and cooling inside buildings. Components connect with brackets.
Brackets
S-Bracket
Drive Bracket
Securely connect rectangular duct and fittings. Brackets can be cut to length. Also known as cleats.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.