Recommended Home Size ( Sq.Ft.) 2019 Code QuietCool WHF Specs - For Specified Fan + HERS Option
2 CFM/sqft. Product Info HERS CFM Watts watt/CFM *HERS Venting
1369 STL Pro 4.8X 2737 490 0.1790 4.17
1603 STL Pro 5.5X 3206 529 0.1650 5.00
1958 STL Pro 6.0X 3916 597 0.1525 5.37
1968 STL Pro 6.5X ** 3936 571 0.1451 5.82
1701 STL Pro 3.3X + 3.3X 3402 620 0.1822 6.26
2525 STL Pro 6.0X + 2.5X 5050 793 0.1570 5.37 + 2.56
2809 STL Pro 6.0X + 3.3X 5617 907 0.1615 5.37 + 3.13
3327 STL Pro 6.0X + 4.8X 6653 1087 0.1634 5.37 + 4.17
3561 STL Pro 6.0X + 5.5X 7122 1126 0.1581 5.37 + 5.00
3916 STL Pro 6.0X + 6.0X 7832 1194 0.1525 5.37 + 5.37