| Base Size - Roof Ventilators | 34 in x 34 in |
| Blade Dia. | 24 in |
| CFM/Throat Velocity @ 0.050-In. SP Gravity Intake | 1724/532 |
| CFM/Throat Velocity @ 0.050-In. SP Gravity Relief | 2101/648 |
| CFM/Throat Velocity @ 0.100-In. SP Gravity Intake | 2438/752 |
| CFM/Throat Velocity @ 0.100-In. SP Gravity Relief | 2971/917 |
| CFM/Throat Velocity @ 0.125-In. SP Gravity Intake | 2725/841 |
| CFM/Throat Velocity @ 0.125-In. SP Gravity Relief | 3321/1025 |
| CFM/Throat Velocity @ 0.200-In. SP Gravity Intake | 3447/1064 |
| CFM/Throat Velocity @ 0.200-In. SP Gravity Relief | 4201/1297 |
| CFM/Throat Velocity @ 0.250-In. SP Gravity Intake | 3854/1190 |
| CFM/Throat Velocity @ 0.250-In. SP Gravity Relief | 4697/1450 |
| Construction Material | Spun Aluminum |
| Depth (In.), Dimension B, Width (In.) | 38 1/4 in |
| Dimension A | 34 in |
| Dimension C | 11 in |
| Dimension D | 4 in |
| Item, Item - Roof Ventilators | Gravity Ventilator |
| Max. Intake CFM/Throat Velocity | 2970/926 |
| Overall Height (In.) | 12 3/4 in |
| Recommended 12 In. Fixed Curb Item No. | 2RB80 |
| Recommended 8 In. Fixed Curb Item No. | 4HX42 |
| Style - Roof Ventilators | Low Profile |