This is a single deflection supply register with horizontal blades and a multi-shutter damper. The horizontal blades adjust the spread of air, while the multi-shutter damper controls the volume of air for optimal performance.
HP821
You may think of grilles and registers as a generic component of the ventilation system in your house, but they are also the most visible representation of your air system. With HVAC Premium you get an extra measure of quality that will be visible to your family members and house guests.
