Duct systems including shield and flange support

A duct system, comprising:

• a duct having a plenum including a first end and a second end, with a plurality of sides between the first end and the second end, the first end including a flange that extends outwardly away from the first end about a perimeter of the first end and the plenum extends along a longitudinal axis;
• a shield and flange support for the duct including a body having a plurality of sides that cooperate to enclose a cavity, with a first one of the plurality of sides coupled to the flange, the first one of the plurality of sides is substantially perpendicular to the longitudinal axis, a second one of the plurality of sides coupled to the plurality of sides of the plenum about the perimeter, the second one of the plurality of sides is substantially parallel to the longitudinal axis, a third one of the plurality of sides of the body is spaced apart from the flange and the plurality of sides of the plenum to define a gap between the body and the plenum, the third one of the plurality of sides interconnects the first one of the plurality of sides and the second one of the plurality of sides and extends along an axis transverse to the longitudinal axis, a fourth one of the plurality of sides interconnects the first one of the plurality of sides and the second one of the plurality of sides, the fourth one of the plurality of sides substantially opposite the third one of the plurality of sides, and the body is coupled to the flange and the duct such that the body extends along a second longitudinal axis substantially transverse to the longitudinal axis of the plenum.

A duct system, comprising:

• a duct having a plenum including a first end and a second end, with a plurality of sides between the first end and the second end, the first end including a flange that extends outwardly away from the first end about a perimeter of the first end;
• and
• a shield and flange support for the duct, the shield and flange support including:
• a body that includes a first side, a second side, a third side and a fourth side, the first side coupled to the flange about the perimeter of the first end;
• the second side coupled to the first side, and the second side interconnects the first side and the third side;
• the third side coupled to the second side and to the plurality of sides of the plenum about the perimeter of the plenum;
• and
• the fourth side interconnects the first side and the third side, the first side, the second side, the third side and the fourth side cooperating to enclose a cavity defined within the body, with at least one of a first insulating fluid and a first insulating solid received in the cavity, and the fourth side is spaced apart from the flange and the plurality of sides of the plenum to define a gap about the perimeter of the first end between the body and the plenum for receipt of at least one of a second insulating fluid and a second insulating solid.