"Boosts air flow from a SolarSheat 1500G (Item# 456300) to travel up to 75 feet of 5in. flexible duct. Connects to SolarSheat DC thermostat. Permanently sealed ball bearing motor Includes temperature sensor, wire and electrical connectors to connect fan to SolarSheat DC thermostat (not included) Can connect up to 2 DC fans per thermostat"
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