SPL 1000 STDF 6-Inch 240 CFM Air Duct Inline Hydroponic Booster Fan 6-Inch diameter, 240 cfm, 110/120-volt Superior metal blades for long life and quiet operation light weight and install anywhere Solve air delivery problems without major system rework or expense Extra-long 5.5-Feet grounded power cord Motor features a permanently lubricated bearing that operates quietly and requires zero maintenance