Dayton Gravity Roof Vent, 19 in Sq Base, 312 CFM

The DAYTON low-profile gravity roof ventilator is designed for exhaust or supply applications on natural gravity or positive pressure systems. Low-profile hood has a rigid aluminum, corrosion-resistant construction. Built-in curb cap with prepunched holes for easy attachment to roof curb. Integral bird screen. Item: Gravity Ventilator Blade Dia.: 10" Base Square Size - Roof Ventilators: 19" x 19" Style - Roof Ventilators: Low Profile Item - Roof Ventilators: Gravity Ventilator CFM/Throat Velocity @ 0.050-In. SP Gravity Intake: 312/548 CFM/Throat Velocity @ 0.050-In. SP Gravity Relief: 370/650 CFM/Throat Velocity @ 0.100-In. SP Gravity Intake: 442/775 CFM/Throat Velocity @ 0.100-In. SP Gravity Relief: 524/919 CFM/Throat Velocity @ 0.125-In. SP Gravity Intake: 494/866 CFM/Throat Velocity @ 0.125-In. SP Gravity Relief: 586/1027 CFM/Throat Velocity @ 0.200-In. SP Gravity Intake: 624/1096 CFM/Throat Velocity @ 0.200-In. SP Gravity Relief: 741/1299 CFM/Throat Velocity @ 0.250-In. SP Gravity Intake: 698/1225 CFM/Throat Velocity @ 0.250-In. SP Gravity Relief: 828/1453 Overall Height (In.): 9 Depth (In.): 20-1/2 Width (In.): 20-1/2 Max. Intake CFM/Throat Velocity: 1032/1801 Construction Material: Spun Aluminum Recommended 8 In. Fixed Curb Item No.: 4HX38 Recommended 12 In. Fixed Curb Item No.: 2RB75 Dimension A: 19" Dimension B: 20-1/2" Dimension C: 7-1/4" Dimension D: 2"

• Made in United States