Downblast Vent, Belt Drive, 30-1/2 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 | 3 HP |
| Base Size - Roof Ventilators | 42 in x 42 in |
| CFM @ 0.000-In. SP | 12,311 |
| Drive Type | Belt Drive |
| Dimension D | 8-1/4 in |
| Motor Voltage | 208/230/460 |
| Dimension C | 36 in |
| CFM @ 0.500-In. SP | 10,997 |
| Base Square Size - Roof Ventilators | 42" x 42" |
| Base Height | 1-3/4 in |
| CFM @ 1.500-In. SP | 6,437 |
| Sones @ 0.125-In. SP @ 5 Ft. | 22 |
| RPM | 760 |
| CFM @ 0.875-In. SP | 9,836 |
| CFM @ 0.250-In. SP | 11,704 |
| Item | Centrifugal Downblast Roof Exhaust Fan |
| Mounting Location | Roof |
| Drive Package Included | Yes |
| Adj. 12 3/8"H Roof Curb Stock No. | 3C438 |
| Wheel Material | Aluminum |
| Recommended 8 In. Fixed Curb Item No. | 4HX43 |
| Speed Controllable | No |
| CFM @ 0.125-In. SP | 12,007 |
| Hz | 60 |
| Housing Material | Aluminum |
| Wheel Type | Backward Inclined |
| Overall Height | 37-3/4 in |
| Wheel Dia. | 30-1/2 in |
| Base Length | 42 in |
| Dimension B | 50 in |
| Includes | Drive Package, NEMA 1 Junction Box |
| CFM @ 0.375-In. SP | 11,357 |
| Assembled/Unassembled | Unassembled |
| Sones @ 0.500-In. SP @ 5 Ft. | 21 |
| Shaft Dia. Wheel End | 1 in |
| Base Width | 42 in |
| CFM @ 0.625-In. SP | 10,629 |
| CFM @ 1.000-In. SP | 9,369 |
| Motor HP | 3 |
| Max. BHP | 3.15 |
| Agency Compliance | AMCA Sound & Air, UL/cUL 705 |
| Phase | 3 |
| CFM @ 1.250-In. SP | 8,293 |
| Overall Dia. | 50 in |
| CFM @ 0.750-In. SP | 10,242 |
| Dimension A | 42 in |
| Max. Inlet Temp. | 180 deg F |
| Adj. 6 3/8"H Roof Curb Stock No. | 4c455 |
| Recommended 12 In. Fixed Curb Item No. | 4HX51 |
| Sones @ 0.250-In. SP @ 5 Ft. | 21 |
| Standards | AMCA Sound and Air, UL/cUL 705 |
| Bearing Type | Regreasable Pillow Block |
| Damper Size | 35 in x 35 in |
| Overall Length | 50 in |
| Overall Width | 50 in |
| Exhaust Airflow @ 0.125 in SP | 12,007 cfm |
| Mount Type | Roof Curb |
| Motor Speed | 1,770 rpm |
| Airflow @ 0.000 in SP | 12,311 cfm |
| Exhaust Airflow @ 0.500 in SP | 10,997 cfm |
| Motor Horsepower | 3 HP |
| Base Shape | Square |
| Nameplate Voltage | 208-230/460V AC |
| Housing Material Fabrication | Spun |
| Exhaust Airflow @ 0.375 in SP | 11,357 cfm |
| Maximum Static Pressure | 1.5 in wc |
| Overall Diameter | 50 in |
| Electrical Connection | Power Cord |
| For High-Static Pressure Applications | No |
| Spark Resistant Construction Type | A |
| Features | Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure |
| Maximum Inlet Air Temperature | 180 deg F |
| Sound Level | 14.0 sones @ 1.500 in SP and 5 ft, 16.8 sones @ 1.250 in SP and 5 ft, 18.6 sones @ 1.000 in SP and 5 ft, 19.3 sones @ 0.875 in SP and 5 ft, 19.8 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, 22.0 sones @ 0.125 in SP and 5 ft, 23.0 sones @ 0.000 in SP and 5 ft |
| High-Efficiency Motor | No |
| Assembly | Unassembled |
| Includes Motor | Yes |
| Motor Enclosure | Open Dripproof |
| For Air Type | Clean Air |
| Exhaust Airflow @ 0.250 in SP | 11,704 cfm |
| Housing Width | 50 in |
| Propeller Shaft Diameter | 1 in |
| Maximum Fan Speed | 760 RPM |
| Compatible Curb Manufacturer Part Number | 2RB81, 2ZV84, 3C438, 4C455, 4HX43, 4HX51 |
| Motor Location | Out of Airstream |
| Frequency | 60 Hz |
| Exhaust Airflow @ 0.000 in SP | 12,311 cfm |
| Housing Length | 50 in |
| Current | 8.4 to 8.0/4.0 A |
| Safety Features | Birdscreen, Windband |
| Includes Drive Package | Yes |
| Resistance Properties | Weather Resistant |
| Brake Horsepower | 3 3/20 hp |
| Wheel Diameter | 30-1/2 in |
| Application | Industrial and Commercial Applications |
| Base Diameter | Not Applicable |
| Country of Origin (subject to change) | Multiple |
| Package Quantity | 1 |