Downblast Vent, Belt Drive, 24-1/2 In
| Item - Roof Ventilators | Downblast Ventilator |
|---|---|
| Drive Package With Motor Included | Yes |
| Duty Rating - Roof Ventilators | Standard |
| Drive Type - Roof Ventilators | Belt Drive |
| Mounting Location - Roof Ventilators | Roof |
| Number of Speeds | 1 |
| Voltage - Roof Ventilators | 208V AC/230V AC/460V AC |
| Motor HP - Roof Ventilators | 2 HP |
| Base Size - Roof Ventilators | 34 in x 34 in |
| CFM @ 0.000-In. SP | 8,355 |
| Motor HP | 2 |
| Dimension A | 34 in |
| Wheel Type | Backward Inclined |
| Dimension B | 42-3/4 in |
| Adj. 6 3/8"H Roof Curb Stock No. | 4c455 |
| CFM @ 0.875-In. SP | 6,616 |
| Phase | 3 |
| Wheel Dia. | 24-1/2 in |
| Base Width | 34 in |
| Base Length | 34 in |
| Sones @ 0.125-In. SP @ 5 Ft. | 23 |
| Motor Voltage | 208/230/460 |
| CFM @ 0.750-In. SP | 6,933 |
| CFM @ 1.250-In. SP | 5,388 |
| Agency Compliance | AMCA Sound & Air, UL/cUL 705 |
| Max. BHP | 2.06 |
| Dimension D | 5-3/4 in |
| CFM @ 0.125-In. SP | 8,135 |
| CFM @ 1.500-In. SP | 3,707 |
| Drive Package Included | Yes |
| Housing Material | Aluminum |
| Recommended 8 In. Fixed Curb Item No. | 4HX42 |
| Max. Inlet Temp. | 180 deg F |
| Recommended 12 In. Fixed Curb Item No. | 4HX50 |
| Sones @ 0.500-In. SP @ 5 Ft. | 21 |
| CFM @ 0.250-In. SP | 7,916 |
| CFM @ 1.000-In. SP | 6,240 |
| Shaft Dia. Wheel End | 1 in |
| Dimension C | 38-3/8 in |
| Includes | Drive Package, NEMA 1 Junction Box |
| Drive Type | Belt Drive |
| Mounting Location | Roof |
| Speed Controllable | No |
| Sones @ 0.250-In. SP @ 5 Ft. | 21 |
| Adj. 12 3/8"H Roof Curb Stock No. | 3C438 |
| RPM | 910 |
| Base Square Size - Roof Ventilators | 34" x 34" |
| Wheel Material | Aluminum |
| CFM @ 0.625-In. SP | 7,215 |
| Overall Dia. | 42-3/4 in |
| CFM @ 0.375-In. SP | 7,700 |
| Assembled/Unassembled | Unassembled |
| CFM @ 0.500-In. SP | 7,467 |
| Overall Height | 40-1/8 in |
| Item | Centrifugal Downblast Roof Exhaust Fan |
| Hz | 60 |
| Base Height | 1-3/4 in |
| Bearing Type | Regreasable Pillow Block |
| Standards | AMCA Sound and Air, UL/cUL 705 |
| Wheel Diameter | 24-1/2 in |
| Motor Location | Out of Airstream |
| Overall Length | 42-3/4 in |
| Electrical Connection | Power Cord |
| Maximum Static Pressure | 1.5 in wc |
| Housing Length | 42.8 in |
| For High-Static Pressure Applications | No |
| Housing Material Fabrication | Spun |
| Brake Horsepower | 2 3/50 hp |
| Safety Features | Birdscreen, Windband |
| Features | Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure |
| Propeller Shaft Diameter | 1 in |
| Overall Diameter | 42-3/4 in |
| Frequency | 60 Hz |
| Sound Level | 13.6 sones @ 1.500 in SP and 5 ft, 16.7 sones @ 1.250 in SP and 5 ft, 19.2 sones @ 1.000 in SP and 5 ft, 19.4 sones @ 0.875 in SP and 5 ft, 19.6 sones @ 0.750 in SP and 5 ft, 20.0 sones @ 0.625 in SP and 5 ft, 21.0 sones @ 0.250 in SP and 5 ft, 21.0 sones @ 0.375 in SP and 5 ft, 21.0 sones @ 0.500 in SP and 5 ft, 23.0 sones @ 0.125 in SP and 5 ft, 24.0 sones @ 0.000 in SP and 5 ft |
| Includes Motor | Yes |
| Assembly | Unassembled |
| Includes Drive Package | Yes |
| Exhaust Airflow @ 0.250 in SP | 7,916 cfm |
| Housing Width | 42.8 in |
| Base Shape | Square |
| Base Diameter | Not Applicable |
| Exhaust Airflow @ 0.000 in SP | 8,355 cfm |
| Airflow @ 0.000 in SP | 8,355 cfm |
| Damper Size | 27 in x 27 in |
| High-Efficiency Motor | No |
| Maximum Inlet Air Temperature | 180 deg F |
| Overall Width | 42-3/4 in |
| Current | 6.0 to 5.8/2.9 A |
| Mount Type | Roof Curb |
| Nameplate Voltage | 208-230/460V AC |
| Motor Speed | 1,745 rpm |
| Motor Enclosure | Open Dripproof |
| Exhaust Airflow @ 0.375 in SP | 7,700 cfm |
| Motor Horsepower | 2 HP |
| For Air Type | Clean Air |
| Resistance Properties | Weather Resistant |
| Spark Resistant Construction Type | A |
| Exhaust Airflow @ 0.500 in SP | 7,467 cfm |
| Exhaust Airflow @ 0.125 in SP | 8,135 cfm |
| Maximum Fan Speed | 910 RPM |
| Application | Industrial and Commercial Applications |
| Compatible Curb Manufacturer Part Number | 2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50 |
| Country of Origin (subject to change) | Multiple |
| Package Quantity | 1 |