Ruck 6 inch Classic HO Centrifugal Fan | 381 CFM, 126W, Metal Casing

Ruck 6 Inch Classic HO Moves 381 CFM on 126W Going HO at 6 inches is a bigger jump than at 4. Airflow rises from 263 to 381 CFM, but the motor pulls 126W at 1.13A instead of 78W, and noise climbs to 74 dB. The casing, impeller and 7.03 lbs weight are unchanged. Operating range stays -13°F to 176°F. Choosing a High Output Inline Fan Over the Standard The case for HO here is a loaded filter plus real duct length, where 263 CFM leaves nothing spare. If your run is short and the filter is fresh, the standard 6-inch is the better fan and the quieter one. At that sound level it needs isolating: a silencer, a longer run, or a room nobody works in. Brackets are on the casing, the cord is 5.5 ft, and it should hang from its own support. Speed control needs care here. The motor is voltage controllable but not suitable for solid-state controllers, so pair it with an autotransformer rather than an electronic dimmer. Key Features 381 CFM: Centrifugal output that holds up against a loaded carbon filter. 126W at 1.13A: Real draw at 120V, so the circuit load is easy to plan. 74 dB Maximum: Sound figure, so you can plan silencing honestly. Backward Curved Impeller: The blade form that keeps pressure up on long duct runs. Powder-Coated Metal Casing: Metal rather than plastic, and corrosion-resistant in damp air. Incorporated Mounting Brackets: Fitted to the casing, so it hangs without extra hardware. 5.5 ft Power Cord: Reaches a socket or controller without an extension in most tents. Voltage Speed Control Only: Not suitable for solid-state controllers, so use an autotransformer. 3-Year Warranty: German-built, and covered for three years. Technical Specifications Specification Value Duct Size 6 in Airflow 381 CFM Power 126 W Current 1.13 A Voltage 120V, 60 Hz Noise (max) 74 dB Motor One-phase AC Impeller Backward curved Casing Powder-coated metal Speed Control Voltage controllable; not for solid-state controls Mounting Incorporated brackets Cord Length 5.5 ft Warranty 3 years Weight 7.03 lbs Protection Rating IPX4 Operating Temperature -13 to 176 °F