COPLANAR SILENCER

Air blowers, namely, hot and cool air blowers used in heating, ventilation, and air conditioning units; air handling units, namely, heating, ventilation, and air conditioning units; clean room ceiling air handling units, namely, air filtering installations for filtering air in a clean room; and fan filtration units, namely, air filtering installations used to filter air in a clean room, heating unit, ventilation unit, and air conditioning unit

Sound attenuation panels, namely, sound absorbing insulation panels of fiberglass and foam for use with electric fans in the nature of axial fans, centrifugal fans, plenum fans and fans used in heating, ventilation, and air conditioning units