Check the listing for details. iPower ETL Certified Variable Fan Speed Controller for Inline Fan Air Blower. Condition: New. Listed at 13.99 USD. Product descriptioniPower is the leading manufacturer of grow light systems, supplying the gardeners worldwide for over a decade. Our goal is to put a light in every garden where needed. In addition to double-ended HPS/MH and ceramic MH technology, we offer digital ballasts, super HPS and MH lamps, fluorescent, and LED lighting. From hobbyist to commercial applications, we offer a broad spectrum of garden tools and equipment in hydroponics, irrigation, climate control, and structures to help your garden thrive. Features: Rotary knob control with 4 options: Off, Low, Medium, and High Ultra-compact and plugs directly into an outlet Plug-and-play for easy installation1 Mounting Tab for wall mounting No messy wires!FeaturesiPower Fan Speed Controller will correctly and precisely adjust the speed of your duct and inline fansDurable 3-Pole Grounded Plug Construction, No Extra Wires to Deal WithOne control switch for 3 settings: Variable Speed, OFF, HIGH, MED, LOWBuilt-in grounded control outlet. Suitable for all Duct and inline fans. Warranty: 1 yearNote: To avoid the risk of burning out the fan motor, controller does NOT adjust below 50%. This controller is not suitable for Shaded Pole Motor and Brushless Motor Fan