Duct Booster Less Stat for 6" or 8" Ducts, DB-2

The DB-2 DUCT BOOSTER is designed to increase the flow of heated air in warm air heating systems, or cooled air in central air conditioning systems. Its size and design limits its use to branch ducts serving individual rooms, not the main supply or "truck line" duct. The DUCT BOOSTER can be mounted on round or flat ducts. It is frequently installed on a warm air duct of a gravity warm air furnace to provide heating for a basement area Maximum performance, motor outside of air stream. Fits 6" or 8" rectangular or round duct.