Highlights

• Best in class efficiency measured by CFM/watt (cubic feet/minute/watt)
• 5052 light aircraft grade aluminum alloy louvers for least air resistance
• Non-rusting extruded aluminum shutter frame
• Shutters automatically open and close
• Corrosion resistant, baked powder painted guards tested to 500-hour salt spray
• Hi-efficiency 100% copper wound motors with permanently-lubricated ball bearings
• Totally enclosed, air over motors, IP155 rated
• Fully assembled, easy to mount pre-drilled flange patterns
• UL 705 safety certified

Home Depot Retail Price $339.00 – Your Price $299.00 New!  Used Price $225.00 limited quantities..