
What the 6 Inch Classic Centrifugal Fan Delivers
This is the size most single-tent exhausts settle on. 263 CFM from a one-phase AC motor drawing 78W at 0.70A. Backward curved impeller blades in a powder-coated metal casing, 7.03 lbs, rated IPX4. Ruck rates it from -13°F to 176°F, which is well beyond anything a grow room will do to it. Built in Germany with a three-year warranty.
Placing This Inline Duct Fan in the Run
Six inches with a carbon filter is the classic single-tent setup, and this handles it. Mount it at the end of the run pulling through the filter rather than pushing into it. Brackets are built into the casing, so it hangs without extra hardware. Then there is the sound. 69 dB is not quiet, and anyone putting this near a living space wants a silencer or a longer duct run. The cord is 5.5 ft. Speed control is worth understanding before wiring. Ruck describes a voltage controllable motor and then states it is not suitable for solid-state controls, so an autotransformer is the safe choice.
Key Features
- 263 CFM: Centrifugal output that holds up against a loaded carbon filter.
- 78W at 0.70A: Real draw at 120V, so the circuit load is easy to plan.
- 69 dB Maximum: Published 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: Ruck rules out 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 | 263 CFM |
| Power | 78 W |
| Current | 0.70 A |
| Voltage | 120V, 60 Hz |
| Noise (max) | 69 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 |