| Dayton Gravity Vent 24 In Base 28 1/2 In Sq 1WDN3 Roof Vent Hood Exhaust Airflow @ 0.100 in SP 3 591 cfm Hood Height 16 in Hood Length 48 in Hood Width 48 in Cutout Length 25 1/2 in Cutout Width 25 1/2 in Housing Material Steel Assembly Partially Assembled Compatible Curb Grainger Part Number 2ZV83... more | | $1,865.72 $1,445.87 FREE shipping go to store |