Metal roof vents for ventilation in residential and commercial buildings; Metal window shutters; Metal jalousies; Ducts of metal for ventilating installations; Ventilating ducts of metal; Wall panels of metal; Metal window sashes; Insect screens of metal; Window ventlights of metal; Ventilation windows of metal; Metal vent cover for HVAC ducts; Metal vent covers for roof deck protrusions, drains and pitch pans; Metal mounting brackets for general use; Metal air deflectors for HVAC vent covers