Downblast Vent, Belt Drive, 50 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 | 64 in x 64 in |
| CFM @ 0.000-In. SP | 21,677 |
| Mounting Location | Roof |
| Adj. 12 3/8"H Roof Curb Stock No. | 1VN43 |
| Hz | 60 |
| Motor HP | 2 |
| Includes | Drive Package, NEMA 1 Junction Box |
| RPM | 269 |
| Adj. 6 3/8"H Roof Curb Stock No. | 3C216 |
| CFM @ 0.125-In. SP | 19,873 |
| Dimension D | 14-1/2 in |
| Sones @ 0.250-In. SP @ 5 Ft. | 13.2 |
| Sones @ 0.125-In. SP @ 5 Ft. | 13.8 |
| Recommended 12 In. Fixed Curb Item No. | 4YY77 |
| Housing Material | Aluminum |
| Motor Voltage | 208/230/460 |
| Wheel Dia. | 50 in |
| Base Square Size - Roof Ventilators | 64" x 64" |
| Base Length | 64 in |
| Wheel Material | Aluminum |
| CFM @ 0.250-In. SP | 17,857 |
| Shaft Dia. Wheel End | 1-1/4 in |
| Overall Height | 52-1/2 in |
| Phase | 3 |
| Dimension C | 50-3/4 in |
| Assembled/Unassembled | Unassembled |
| Dimension A | 64 in |
| Agency Compliance | AMCA Sound & Air, UL/cUL 705 |
| Overall Dia. | 83 in |
| Drive Type | Belt Drive |
| Max. Inlet Temp. | 180 deg F |
| Base Width | 64 in |
| Max. BHP | 2.08 |
| Drive Package Included | Yes |
| Recommended 8 In. Fixed Curb Item No. | 4YY76 |
| Base Height | 1-3/4 in |
| Wheel Type | Backward Inclined |
| Dimension B | 83 in |
| Speed Controllable | No |
| CFM @ 0.375-In. SP | 15,752 |
| Item | Centrifugal Downblast Roof Exhaust Fan |
| Bearing Type | Regreasable Pillow Block |
| Standards | AMCA Sound and Air, UL/cUL 705 |
| Wheel Diameter | 50 in |
| Housing Width | 83 in |
| Assembly | Unassembled |
| Includes Drive Package | Yes |
| Application | Industrial and Commercial Applications |
| Resistance Properties | Weather Resistant |
| Base Diameter | Not Applicable |
| Airflow @ 0.000 in SP | 21,677 cfm |
| Exhaust Airflow @ 0.125 in SP | 19,873 cfm |
| Damper Size | 50 in x 50 in |
| Compatible Curb Manufacturer Part Number | 1VN43, 2RB83, 2ZV87, 4YY76, 4YY77 |
| Exhaust Airflow @ 0.000 in SP | 21,677 cfm |
| Sound Level | 12.7 sones @ 0.375 in SP and 5 ft, 13.2 sones @ 0.250 in SP and 5 ft, 13.8 sones @ 0.125 in SP and 5 ft, 14.3 sones @ 0.000 in SP and 5 ft |
| Base Shape | Square |
| Overall Width | 83 in |
| Features | Fully Rolled Windband Bead for Increased Stability and Easy Transport, Nema 1 Junction Box Located in Motor Enclosure |
| Safety Features | Birdscreen, Windband |
| Housing Length | 83 in |
| Frequency | 60 Hz |
| Brake Horsepower | 2 2/25 hp |
| Overall Diameter | 83 in |
| Motor Speed | 1,745 rpm |
| Maximum Inlet Air Temperature | 180 deg F |
| Mount Type | Roof Curb |
| Housing Material Fabrication | Spun |
| Includes Motor | Yes |
| Maximum Fan Speed | 269 RPM |
| Maximum Static Pressure | 0.375 in wc |
| Nameplate Voltage | 208-230/460V AC |
| Motor Horsepower | 2 HP |
| For Air Type | Clean Air |
| For High-Static Pressure Applications | No |
| Overall Length | 83 in |
| Current | 6.0 to 5.8/2.9 A |
| Motor Enclosure | Open Dripproof |
| Exhaust Airflow @ 0.250 in SP | 17,857 cfm |
| Motor Location | Out of Airstream |
| High-Efficiency Motor | No |
| Propeller Shaft Diameter | 1-1/4 in |
| Exhaust Airflow @ 0.375 in SP | 15,752 cfm |
| Electrical Connection | Power Cord |
| Country of Origin (subject to change) | Multiple |
| Package Quantity | 1 |