Thread: What is it called? (An Anti-convection Air Tube?)
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Vir Campestris Vir Campestris is offline
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Default What is it called? (An Anti-convection Air Tube?)
On 04/08/2020 17:08, Andrew wrote:
Dust recirculation system

Unlikely. Most dust sinks to the floor; it will be picking up cleaner
air from near the ceiling.

Andy
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