the Altra Air HVLS fan
The Altra-Air HVLS* ventilator, produced by the Canadian company Envira-North is the answer to the noisy, high energy-using ventilators that are still used by most farmers nowadays.
* HVLS - High Volume Low Speed
Using WhalePower technology helps reduce energy usage by significant amounts, whilst increasing the air-flow in the shed. Added to that, the ventilator nearly makes no sound at all.
