Abstract: A ventilating system includes a main housing defining an inlet configured to receive air into the main housing and an outlet configured to allow the air to exit the main housing. The system further includes a fan in the main housing and configured and arranged to generate a flow of air into the main housing through the inlet and from the main housing through the outlet. The system further includes a grille configured to be coupled to the main housing, a plate configured to be coupled to the grille, and a lens coupled to the plate.

Abstract: A ventilation unit have a scroll defining an interior space, a blower wheel located in the interior space to be driven in rotation to draw air into the interior space to ventilate a room. The blower wheel includes a wheel hub mounted to the motor, a plurality of fan blades coupled to an upper end of the wheel hub and spaced circumferentially about the axis, and a support ring coupled to a radially-outer edge of the plurality of fan blades. The wheel hub includes a central motor mount, a peripheral blade mount ring coupled to each of the plurality of fan blades and a plurality of spokes interconnecting the central motor mount and the peripheral blade mount ring. Each of the spokes have an airfoil-shaped cross section.

Abstract: A ventilating system includes a main housing defining an inlet configured to receive air into the main housing and an outlet configured to allow the air to exit the main housing. The system further includes a fan in the main housing and configured and arranged to generate a flow of air into the main housing through the inlet and from the main housing through the outlet. The system further includes a grille configured to be coupled to the main housing, a plate configured to be coupled to the grille, and a lens coupled to the plate.

Abstract: A ventilation fan includes a scroll formed to define an interior space, an inlet opening into the interior space, and an outlet opening into the interior space and spaced apart from the inlet. A fan wheel is coupled to the scroll within the interior space and includes a plurality of fan blades configured to rotate about a vertical rotation axis to draw air into the interior space to ventilate a room positioned adjacent to the ventilation fan. An inlet collar is coupled to an exterior surface of a bottom wall of the scroll and extends through the inlet. The inlet collar has a upper, distal end located above a lower end of each of the plurality of fan blades when the ventilation fan is installed above or adjacent to a ceiling of the building.

Abstract: A ventilation fan wheel having a wheel hub. A plurality of peripheral fan blades are coupled to an outer edge of the wheel hub and spaced apart circumferentially about a rotation axis of the fan wheel. A plurality of impeller fan blades extend from the wheel hub radially between the rotation axis and the plurality of peripheral fan blades.

Abstract: A fan wheel for a ventilation fan, the fan wheel having a wheel hub defining a rotation axis. A plurality of fan blades extend from an outer edge of the wheel hub and are spaced apart circumferentially about the rotation axis. Each of the plurality of the fan blades is arranged to lie at an angle relative to a horizontal plane perpendicular to the rotation axis resulting in a distal end of each of the fan blades being positioned circumferentially forward of a proximal end of each corresponding fan blade in a direction of travel of the fan wheel about the rotation axis.

Abstract: A ventilating system includes a main housing defining an inlet configured to receive air into the main housing and an outlet configured to allow the air to exit the main housing. The system further includes a fan in the main housing and configured and arranged to generate a flow of air into the main housing through the inlet and from the main housing through the outlet. The system further includes a grille configured to be coupled to the main housing, a plate configured to be coupled to the grille, and a lens coupled to the plate.

Abstract: A ventilation fan includes a scroll formed to define an interior space, an inlet opening into the interior space, and an outlet opening into the interior space and spaced apart from the inlet. A fan wheel is coupled to the scroll within the interior space and includes a plurality of fan blades configured to rotate about a vertical rotation axis to draw air into the interior space to ventilate a room positioned adjacent to the ventilation fan. An inlet collar is coupled to an exterior surface of a bottom wall of the scroll and extends through the inlet. The inlet collar has a upper, distal end located above a lower end of each of the plurality of fan blades when the ventilation fan is installed above or adjacent to a ceiling of the building.

Abstract: A scroll for a blower assembly includes a motor-mount plate, and a housing configured to be coupled to the motor-mount plate to define an interior blower cavity. The housing comprises inner and outer walls defining a cavity configured to dampen noise and vibrations produced by the blower assembly during operation.