Ruck 18 inch Prime Mixed Flow Inline Duct Fan | 3,634 CFM, 665W

Ruck 18 Inch Prime Mixed Flow Moves 3,634 CFM

Aluminium housing, 240V supply, IP54 motor. The 18 inch Prime pushes 3,634 CFM for 665W at 2.8A, with an integrated 3-speed switch so output can be stepped down without extra hardware. The motor sits protected inside the hub. Ruck rates it from -13°F to 176°F, the widest span in the Prime line.

Sizing a Grow Room Ventilation Fan at 3,634 CFM

Fit it where a room genuinely needs several thousand CFM, and check the supply is in place before ordering. The integrated speed switch means you can size for peak and run lower most of the time, which is how these last. That high temperature ceiling also makes it the safest choice in the range for a hot room. Keep the duct straight where you can, since at this diameter every elbow is expensive in pressure. Support it from the structure rather than the duct, and leave service access at both collars so the impeller can be cleaned in place.

Key Features

• 3,634 CFM: Mixed flow output that holds pressure against a loaded filter.
• 665W at 2.8A: Published draw on 240V, so the circuit can be planned properly.
• 3D Shaped Impeller: The blade form Ruck uses to lift efficiency and drop noise.
• Aluminum Housing: Light for the size and easy to handle.
• Mounting Bracket Included: Hangs on its own support rather than loading the ductwork.
• Motor in the Hub: The motor sits inside the fan hub, out of the weather and the dust.
• Integrated 3-Speed Switch: Step output down at night without extra hardware.

Technical Specifications