SmartVentilation's Red Zephyr Variable Speed Plug 'n Play 12vdc fan reliably starts at 5 cfm and will operate at any speed up to  to a mzximum of 95 cfm. It is an easy reetrofit for 120 ac single speed fans.
SmartVentilation's variable seed 12vdc Plug .'n Play retrofit for single speed fans.
Testing a SmartVentilatioln Red Zephyr prototype  for Llinearity of Speed Control. It performed flawlessly. 5 to 95 cfm. Remarkably, it would start reliably at settings of only 5 cfm
  • Load image into Gallery viewer, SmartVentilation's Red Zephyr Variable Speed Plug 'n Play 12vdc fan reliably starts at 5 cfm and will operate at any speed up to  to a mzximum of 95 cfm. It is an easy reetrofit for 120 ac single speed fans.
  • Load image into Gallery viewer, SmartVentilation's variable seed 12vdc Plug .'n Play retrofit for single speed fans.
  • Load image into Gallery viewer, Testing a SmartVentilatioln Red Zephyr prototype  for Llinearity of Speed Control. It performed flawlessly. 5 to 95 cfm. Remarkably, it would start reliably at settings of only 5 cfm

Red / Black Zephyr Variable Speed 4" inline fan

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$110.00
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$110.00
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The variable speed Red/Black Zephyr is powered by a custom designed premium, moisture -protected ECM motor for excellent speed control. 5-85 cfm. This fan will reliably start and run at 5 cfm. Powered by a 12 vdc 3a plug-in power pack. Designed for Plug 'n Play installations. Speed controlled by a 0-10 vdc signal or use with manual speed controller, CO2 controller, Humidity controller, micro-pressure controller. Power supply, controller not included