air moving device

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1. An air-moving device composed of a wheel or blade and housing or orifice plate.
2. During construction or demolition of a building, an upwardly projecting arrangement of scaffolding and netting that is intended to catch any debris that might otherwise fall to the ground. Also see axial-flow fan, centrifugal fan, plenum fan, propeller fan, return fan, supply fan, tubeaxial fan, vaneaxial fan.
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SynJet's fanless air moving devices consume little power, and minimize luminaire footprint and weight by shrinking heat sink mass by up to-two thirds.