New Programmable Heat Cooling Vent 4" x 10"
$3
For sale: new in box programmable heat and cooling vent, 4" x 10". This is a heavy-duty steel vent designed to save energy. It programs to automatically open and close, controlling airflow to unoccupied rooms day or night. The removable digital module makes programming easy, and it features a 7-day program with 2 open/close cycles per day. Simple 3-button operation and a low battery alert are included. Fits duct size 4" x 10". Cash accepted.
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