Please note: This item is purchase to order. Cost-Effective, Entry Level Fans - Ideal for Beginners Rhino Mixed-Flow fans get the job done, and for a very reasonable price. They've got everything you need to get started, straight out of the box - with no wiring or extra parts required. They also feature two speed settings so that you can gain some additional control over your environment before investing in a fan speed controller. For the more serious growers out there, we recommend using a digital fan like the Hyperfan or the Revolution Vector EC, which are more efficient, powerful and controllable - but if you're just getting going, Rhino fans represent phenomenal value for money. Airflow Rates 4" - 165-200 m3/h 5" - 248 - 284 m3/h 6" - 397 - 516 m3/hr Recommended Additional Purchases Check out our CarboAir and Rhino Pro carbon filters How the Rhino Fan Works The Rhino Mixed-Flow fan is used to remove stale, humid air from the grow area. By attaching a carbon filter to it, you can also remove odours from the area at the same time. Your extraction system is the main tool at your disposal for taking control of the grow room environment, so it makes sense to invest in the best equipment that you can lay your hands on. The Rhino Mixed Flow Fan represents great value for money, offering two speed settings, a decent build-quality, plug-and-play functionality and high levels of air movement. To see our full Duct Fans range, click here