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Aprilaire 6403 Single or Multi-Stage 3-Zone Control Panel$153.42
The Model 6404 or 6403 Zone Panel can be configured to control heat pump or conventional applications. The Model 6403 can control up to 3 zones. The 6404 can control up to 4 zones and is expandable up to 12 with the use of the Model 6401 two-zone expansion panel.
The features include: