Best Seller | DAYTON 1WDN6 Gravity Vent,42 In,Base 46 1/2 In Sq Roof Vent Hood, Exhaust Airflow @ 0.100 in SP 8,809 cfm, Hood Height 16 in, Hood Length 78 in, Hood Width 72 in, Cutout Length 43 1/2 in, Cutout Width 43 1/2 in, Housing Material Steel, Assembly Partially Assembled, Compatible Curb Grainger Part Number... ... more DAYTON 1WDN6 Gravity Vent,42 In,Base 46 1/2 In Sq Roof Vent Hood, Exhaust Airflow @ 0.100 in SP 8,809 cfm, Hood Height 16 in, Hood Length 78 in, Hood Width 72 in, Cutout Length 43 1/2 in, Cutout Width 43 1/2 in, Housing Material Steel, Assembly Partially Assembled, Compatible Curb Grainger Part Number... | | $1,844.99 go to store |