Welcome to 
Volko Supply... Online
Servicing Home Owners & Contractors since 1948
A competitively priced full service building supply...Online!
Full service still exists, and here the premium is on service not on price.
  Wow!!!  I found it at Volko...... and they made it easy to order. 

Solar Attic Fan | Copper Finials | Cupolas | Metal Ceilings | Oak Grilles Vents & Registers | Copper Roof Vents & Flashings | Gutter Accessories | Underground Garbage Cans 
Fireplace & Chimney Dampers | Chimney Cap & Covers | Enervex Exhausto Chimney Fans | Chimney Chase Surrounds | Draft Inducers | HVAC Duct Fans

• Deep drawn flange and unique rain shield keep water out.
• Factory-set adjustable thermostat (switches on at 100 degrees and off at 85 degrees).
• Thermostat features a "push to test" button.
• Balanced fan blades for quiet operation.
• 8x8 aluminum screen attached for insect protection.
• Humidistat available at an additional cost to allow the unit to discharge moisture-laden winter air automatically.
• Settings for humidistat are: minimum 80%, normal 42%, and maximum 20%.
• Humidistat is adjustable to fit individual attic humidity levels.
• 5-year limited warranty.
• This is an exhaust louver.