Roof Vent Hood Exhaust Airflow @ 0.100 in SP 10 882 cfm Hood Height 16 in Hood Length 90 in Hood Width 84 in Cutout Length 49 1/2 in Cutout Width 49 1/2 in Housing Material Steel Assembly Partially Assembled Compatible Curb Grainger Part Number 2ZV86 3AZJ6 3C216 Compatible Damper Grainger Part Number 6WRK8 Mount Type Roof Curb Number of Filters 0