Downblast Less Drive Package, 24-1/2In, Number of Speeds: 1
| Item - Roof Ventilators | Downblast Ventilator |
|---|---|
| Drive Package With Motor Included | No |
| Duty Rating - Roof Ventilators | Hazardous Location |
| Drive Type - Roof Ventilators | Belt Drive |
| Mounting Location - Roof Ventilators | Roof |
| Number of Speeds | 1 |
| Base Size - Roof Ventilators | 34 in x 34 in |
| Base Height | 1.8 in |
| Recommended Damper Stock No. | 4HX68 |
| Wheel Dia. | 24-1/2 in |
| Adj. 12 3/8"H Roof Curb Stock No. | 2ZV84 |
| Wheel Type | Backward Inclined |
| Dimension D | 5-3/4 in |
| Wheel Material | Aluminum |
| Bearing Type | Regreasable Pillow Block |
| Recommended Damper Size (In.) | 27 x 27 |
| Motor HP Range | 0.25 to 3 |
| Base Width | 34 in |
| Overall Height | 40-1/8 in |
| CFM Range | 4223 to 8355 @ 0.0 in SP |
| Dimension A | 34 in |
| Requires | Roof Curb for New Installation |
| Overall Dia. | 42-3/4 in |
| Housing Material | Aluminum |
| Max. Inlet Temp. | 180 deg F |
| Base Length | 34 in |
| Includes | NEMA 1 Junction Box |
| Dimension C | 38-3/8 in |
| RPM Range | 460 to 910 |
| Shaft Dia. Wheel End | 1 in |
| Recommended 8 In. Fixed Curb Item No. | 4HX42 |
| Item | Centrifugal Downblast Roof Exhaust Fan |
| Dimension B | 42-3/4 in |
| Recommended 12 In. Fixed Curb Item No. | 2RB80 |
| Adj. 6 3/8"H Roof Curb Stock No. | 4c455 |
| Shaft Dia. Sheave End | 1 in |
| Mounting Location | Roof |
| Drive Type | Belt Drive |
| Standards | AMCA Sound and Air, UL/cUL 705 |
| Speed Controllable | No |
| Features | Air Handling Quality Bearings Meet Minimum of L10-100,000 Hours, Features a Fully Rolled Windband Bead for Increased Stability and Easy Transport, Fresh Outside Air is Drawn in Under the Motor Cover to Maximize Motor Life, Nema 1 Junction Box Located in Motor Enclosure, Nonoverloading Centrifugal Wheel Design, Optional Nema 1 and 4 Disconnects Available |
| Application | Industrial and Commercial Buildings |
| Overall Width | 38-3/8 in |
| Overall Length | 42-3/4 in |
| For Air Type | Clean Air |
| Assembly | Unassembled |
| Cutout Size | 29-1/2 in L x 29-1/2 in W |
| Housing Material Fabrication | Spun |
| Maximum Inlet Air Temperature | 180 deg F |
| Cutout Length | 29-1/2 in |
| Wheel Diameter | 24 in |
| Includes Motor | No |
| Maximum Static Pressure | 1.5 in wc |
| Noise Level @ 0.000 in SP @ 5 ft | 6.7 sones |
| Housing Length | 42.8 in |
| Minimum Airflow | 2,036 cfm |
| Power Source | Electric Motor |
| Includes Drive Package | No |
| Spark Resistant Construction Type | A |
| Base Shape | Square |
| Safety Features | Birdscreen, Windband |
| Minimum Motor Horsepower | 0.25 HP |
| Maximum Fan Speed | 910 RPM |
| Compatible Curb Manufacturer Part Number | 2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50 |
| Housing Width | 42.8 in |
| For High-Static Pressure Applications | No |
| Sound Level | Fan RPM 460: 6.7 sones @ 0.000 in SP and 5 ft, 6.6 sones @ 0.125 in SP and 5 ft, 5.7 sones @ 0.250 in SP and 5 ft, 4.2 sones @ 0.375 in SP and 5 ft, Fan RPM 505: 7.8 sones @ 0.000 in SP and 5 ft, 7.5 sones @ 0.125 in SP and 5 ft, 6.9 sones @ 0.250 in SP and 5 ft, 6.1 sones @ 0.375 in SP and 5 ft, Fan RPM 585: 10.3 sones @ 0.000 in SP and 5 ft, 9.7 sones @ 0.125 in SP and 5 ft, 9.1 sones @ 0.250 in SP and 5 ft, 8.8 sones @ 0.375 in SP and 5 ft, 8.2 sones @ 0.500 in SP and 5 ft, 7.2 sones @ 0.625 in SP and 5 ft, Fan RPM 660: 13.1 sones @ 0.000 in SP and 5 ft, 12.4 sones @ 0.125 in SP and 5 ft, 11.8 sones @ 0.250 in SP and 5 ft, 11.3 sones @ 0.375 in SP and 5 ft, 11.0 sones @ 0.500 in SP and 5 ft, 10.6 sones @ 0.625 in SP and 5 ft, 10.4 sones @ 0.750 in SP and 5 ft, Fan RPM 730: 15.8 sones @ 0.000 in SP and 5 ft, 15.0 sones @ 0.125 in SP and 5 ft, 14.3 sones @ 0.250 in SP and 5 ft, 13.8 sones @ 0.375 in SP and 5 ft, 13.4 sones @ 0.500 in SP and 5 ft, 13.1 sones @ 0.625 in SP and 5 ft, 12.9 sones @ 0.750 in SP and 5 ft, 12.7 sones @ 0.875 in SP and 5 ft, Fan RPM 825: 19.7 sones @ 0.000 in SP and 5 ft, 18.6 sones @ 0.125 in SP and 5 ft, 17.7 sones @ 0.250 in SP and 5 ft, 17.2 sones @ 0.375 in SP and 5 ft, 16.8 sones @ 0.500 in SP and 5 ft, 16.4 sones @ 0.625 in SP and 5 ft, 16.2 sones @ 0.750 in SP and 5 ft, 15.6 sones @ 0.875 in SP and 5 ft, 14.8 sones @ 1.000 in SP and 5 ft, Fan RPM 910: 24.0 sones @ 0.000 in SP and 5 ft, 23.0 sones @ 0.125 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, 20.0 sones @ 0.625 in SP and 5 ft, 19.6 sones @ 0.750 in SP and 5 ft, 19.4 sones @ 0.875 in SP and 5 ft, 19.2 sones @ 1.000 in SP and 5 ft, 16.7 sones @ 1.250 in SP and 5 ft, 13.6 sones @ 1.500 in SP and 5 ft |
| Propeller Shaft Diameter | 1 in |
| Overall Diameter | 42-3/4 in |
| Mount Type | Roof Curb |
| Electrical Connection | Power Cord |
| Maximum Motor Horsepower | 3 HP |
| Maximum Airflow | 8,355 cfm |
| Motor Location | Out of Airstream |
| Resistance Properties | Weather Resistant |
| Damper Size | 27 in x 27 in |
| Minimum Motor Speed | 460 RPM |
| Maximum Motor Speed | 910 RPM |
| Base Diameter | Not Applicable |
| Brake Horsepower | 13/50 hp |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |