Abstract: A plenum slot diffuser includes a plenum box having five walls formed by joining edges of a C-shaped bracket having first, second, and third walls of the five walls with additional edges of an L-shaped bracket having fourth and fifth walls of the fives walls. An air input opening of the plenum box is disposed in one of the five walls and is configured to be coupled to a duct, and an open end of the plenum box defines an air output opening. The plenum slot diffuser includes at least one blade and a blade holding rod comprising a neck, wherein the neck faces away from the air output opening of the plenum box.

Abstract: An enclosure for an actuator of an HVAC unit includes a hollow member with an inner shell, an outer shell, and an insulation layer disposed between the inner shell and the outer shell. A cavity within the inner shell operates to receive an actuator. An exterior surface of the hollow member has curvilinear shape configured to limit resistance to airflow over the exterior surface. A base of the enclosure is connected to a first end of the hollow member and a cover is detachably coupled to a second end of the hollow member opposite the first end.

Abstract: A plenum slot diffuser includes a plenum box having five walls formed by joining edges of a C-shaped bracket having first, second, and third walls of the five walls with additional edges of an L-shaped bracket having fourth and fifth walls of the fives walls. An air input opening of the plenum box is disposed in one of the five walls and is configured to be coupled to a duct, and an open end of the plenum box defines an air output opening.