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Weaver Air logo with a bright blue light ring on a black background
altra-air-sailfin

Altra-Air Sailfin HVLS fans blanket a very large area with constantly moving air to create an expansive comfort zone. As a result, this large ceiling fan can create an evaporative cooling effect of 3 to 4 degrees Celsius throughout the facility.

High Volume Low Speed Fans

The Sailfin Blade Design is a massive evolutionary step towards our most advanced airfoil yet capable of producing a 6mph breeze.

The Sailfin Advantage

Airfoils don’t change....That is unless you work with Envira-North Systems. Since 2003, we’ve continually searched, tested and modified airfoils to maximize their efficiency – solely for the purpose of moving large volumes of air a low speeds. Here’s what we’ve done:

 

  • Increased air speeds.

  • Reduced operating costs.

  • Decreased noise.

  • Streamlined appearance.
     

 

Sailfin represents everything users want in an HVLS Fan, it looks nice, moves a ton of air and consumes very little energy!

Sailfin Stats

8' to 24'       16°-23°        Lifetime      6 MPH

Diameter Fans      

Varying Degree Angel of Attack

Warranty

Breeze

altra-air-sailfin-2

Technical Specifications
 

  • Fans range from 3.7 to 7.3 m (12 ft to 24 ft) in diameter.

  • 6MPH breeze.

  • Maximum 5.7A draw.

  • 264 CFM/Watt

  • Variable speed operation.

  • Minimal 2.5" blade flex.

  • Up to 23° angle of attack.

  • Less torque.

Warranty

Altra-Air fans come with a lifetime warranty on the blades and hub. The motor, gear reducer and VFD control panel come with a three year limited warranty.

Safety
 

Envira-North’s blade toppers prevent a rotor from failing in the unlikely event of a catastrophic failure of the hub or drive system. The collet-type friction drive bushing connecting the hub to the reducer shaft allows controlled slippage in the event of a seizure of the reducer mechanism, or a failure of the soft start feature in the control panel.

Direct Drive Altra-Air Sailfin HVLS Fans

gearless-sailfin-literature

Altra-Air Sailfin Fan is Now Gearless!

Technical Specifications
 

  • Fans range from 3.7 to 7.3 m (12 ft to 24 ft) in diameter.

  • 6MPH breeze.

  • Variable speed operation.

  • Minimal 2.5" blade flex.

  • Up to 23° angle of attack.

  • Less torque.

Warranty
 

Altra-Air fans come with a lifetime warranty on the blades and hub. The motor and VFD control panel come with a three year limited warranty.

Safety
 

Envira-North’s blade toppers prevent a rotor from failing in the unlikely event of a catastrophic failure of the hub or drive system.

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