Max-Fan Pro Series 6 inch 420 CFM
Even more Efficient and Stronger than the original Max-Fanâ„¢ design, the Max-Fan PRO SERIESâ„¢ has a much more Robust housing due to the fiberglass Reinforced plastic compounds that meet all of the UL and CSA requirements. Quieter, Stronger, 3 Speed Control and True Performance. Specifications: CFM @ Og: 420 High, 378 Medium, 291 Low Rpm: 3320 Max Watts: 69 Amps: 0.62 Duct Size: 6 inch Max Height: 9.25 inch Length: 12.125 inch Blade Design: Diagonal / Mix Flow Housing: Plastic Weight: 6 lbs Inlet/Outlet: 6 inch Power: 120 vac Hertz: 60 hz *Never set speed or motor control below 40% operating speed to avoid overheating this, or any fan.