Patent ID: 11892190
Assignee: DUST FREE, LP
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The heating, ventilation and air conditioning air conveyance apparatus of claim 1, wherein each hemmed cleat further comprises:
a butt end extending generally perpendicular from a face of the respective second quadrilateral panel and along and spaced apart from the respective edge of the pair of opposite edges of the respective second quadrilateral panel; and
a projecting lip extending from the butt end, generally parallel to the face of the respective second quadrilateral panel, toward the respective edge of the pair of opposite edges of the respective second quadrilateral panel, spaced apart from the face of the respective second quadrilateral panel a distance to define a first quadrilateral panel right-angle flange receptive hemmed cleat slot sized to receive one of the first quadrilateral panel right-angle flanges.