Description
The RK Fan's plastic centrifugal design, with a built-in 4-speed switch instead of a voltage dial
The Can RK(L)S Fan is the 4-speed version of the Can RK range — the same economic, maintenance-free plastic-bodied backward-curved centrifugal extractor, but with a 4-speed switch built in rather than a voltage-controllable motor. It's not compatible with a standard voltage controller, so speed is set directly at the fan, and it carries the same thermal overheat protection as the rest of the RK family.
Key Benefits
- Built-in 4-speed switch gives four fixed speed settings without needing a separate controller.
- Thermal overheat protection switches the motor off automatically if it runs too hot.
- Durable plastic housing, resistant and maintenance-free.
- Backward-curved centrifugal design for solid static pressure through ducting and filters.
- Simple setup — no controller wiring, just select a speed at the fan.
Not every grow space needs stepless speed control, and a fan with fixed switch speeds is simpler to wire and set up when a controller isn't wanted. The 4-speed switch gives enough range to match airflow to the room across the different stages of a grow without any extra equipment.
How to Use
Wire the fan directly to mains power and select the speed setting that clears the room's air volume several times an hour. Mount with the airflow arrow pointing away from the room, and keep the intake grille clear of dust to avoid tripping the thermal cut-out. Not compatible with a standard voltage-based speed controller.
- Design: backward-curved centrifugal, plastic housing
- Speed control: built-in 4-speed switch (not voltage-controllable)
- Protection: built-in thermal overheat switch
- Airflow range: 270-830 m³/h
- Sizes: 100mm-200mm (4"-8")
