Dampers and louvers control the flow of air in a process system or enclosed area. Dampers are usually motorized or manually-adjustable for flow control. They can modulate gas or air flow, detour flow ...
Attic venting usually involves soffit vents, which can be little circular devices with screened louvers or a continuous band of screened louvers in the roof overhang, to bring in fresh air.
Examples include air handlers, central air conditioning systems, dampers and louvers, energy recovery and heat recovery ... room air conditioners; and vents and venting systems.
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