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two things you must know to get the maximum benefit from your attic fan

4/12 Roof

terms

Attic Size Attic Fan Needed
800sf (1) 20 watt fan Buy
1,200sf (1) 20 watt fan Buy
1,600sf (1) 25 watt fan Buy
2,000sf (1) 30 watt fan Buy
2,400sf (1) 30 watt + (1) 20 watt Buy

8/12 Roof

terms

Attic Size Attic Fan Needed
800sf (1) 20 watt fan Buy
1,200sf (1) 20 watt fan Buy
1,600sf (1) 25 watt fan Buy
2,000sf (1) 30 watt fan Buy
2,400sf (1) 30 watt + (1) 20 watt Buy

12/12 Roof

terms

Attic Size Attic Fan Needed
800sf (1) 20 watt fan Buy
1,200sf (1) 20 watt fan Buy
1,600sf (1) 25 watt fan Buy
2,000sf (1) 30 watt fan Buy
2,400sf (1) 30 watt + (1) 25 watt Buy