Vortex VMF400 157 CFM 4" Inline Fan VTX SERIES VTX600L design features:

VTX600L design features:

Replacement prefilter suitable with the Pro-Lite 4X16

they are fluted on both ends to ease connection to ducting

Optional speed control easing airflow adjustment

This impeller and guide vane combination provides a smooth laminar air flow which in turn minimizes turbulence and noise and generate an excellent air flow to static pressure performance ratio

Vortex VMF400 157 CFM 4" Inline Fan VTX SERIES VTX600L design features:The Vortex Powerfan VMF Series is an in line duct fan specifically designed to maximize the airflow performance with minimal noise levels in a small, compact housing. These fans incorporate a powerful mixed flow impeller and internal air vanes located at the discharge end of the fan housing. This impeller and guide vane combination provides a smooth laminar air flow which in turn minimizes turbulence and noise and generate an excellent air flow to