Ruck 8 inch Prime EVO Mixed Flow Inline Duct Fan | 859 CFM, 180W, 3-Speed

Stepping Up to the 8 Inch Prime EVO

Step up from the 6 inch and airflow roughly doubles while power nearly triples. 859 CFM comes from 180W at 1.5A, with the impeller at 3,250 RPM. That is the trade, and it is worth knowing before the circuit gets planned. The blade form, the injection moulded housing, the IPX4 rating, the integrated three-speed switch and the ETL listing all carry over from the smaller size. What you gain here is headroom rather than refinement.

Running an 8 Inch Inline Duct Fan on a Loaded Filter

Eight inches is where most two-tent and small-room exhausts land, and this handles that load with headroom for a filter and a few elbows. Hang it on its own strap using the supplied bracket rather than letting the ducting carry the weight. The current draw is worth a thought at this size. It shares a 15A circuit with lights and a dehumidifier less comfortably than the 6 inch does. There is no published dB figure for this fan, which is a real gap if the room sits near living space. Cord length is 5.5 ft and the warranty runs three years.

Key Features

• 859 CFM: Mixed flow output at 180W and 1.5A on a 120V circuit.
• 3D Shaped Impeller: Blade form that holds pressure where an axial booster stalls.
• Integrated 3-Speed Switch: Fitted to the casing, so no separate controller is needed.
• 3,250 RPM Impeller: Published speed, useful for matching a silencer or duct run.
• IPX4 Plastic Housing: Corrosion-resistant and splash-rated for humid rooms.
• ETL Listed: Third-party safety certification for commercial installs.
• Mounting Bracket and 5.5 ft Cord: Hangs and plugs in without extra hardware.
• 3-Year Warranty: German-built, and covered for three years.

Technical Specifications