Vents VK Series Inline Centrifugal Fans Model:VK 315 - 12 3/8" They include all necessary hardware

They include all necessary hardware and brackets for a straightforward installation

Auto-closing shutters to block outside air when unit is off

one for the extraction fan and one for the intake fan

these inline fans maintain exceptional airflow

93% Heat Recovery Efficiency for year-round energy savings

Vents VK Series Inline Centrifugal Fans Model:VK 315 - 12 3/8" They include all necessary hardwareThe Vents VK Series Inline Duct Fans deliver powerful, efficient ventilation for residential, commercial, and industrial applications. Engineered with a backward curved centrifugal impeller and a sealed external rotor motor with long life bearings and thermal protection, these inline fans maintain exceptional airflow, even in long duct runs and high static pressure systems. Built from durable, UV resistant 5VA rated plastic, Vents VK fans are designed