Roof vent hood exhaust airflow 0.100 In sp 7 251 cfm hood height 16 in hood length 68 in hood width 60 in cutout length 37 1 2 in cutout width 37 1 2 in housing material steel assembly partially assembled compatible curb grainger part number 2zv84 3azj2 4c455 compatible damper grainger part number 3hhn1 mount type roof curb number of filters 0
