Item - Roof Ventilators
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Downblast Ventilator
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Drive Package With Motor Included
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No
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Duty Rating - Roof Ventilators
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Hazardous Location
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Drive Type - Roof Ventilators
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Belt Drive
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Mounting Location - Roof Ventilators
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Roof
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Number of Speeds
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1
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Adj. 6 3/8"H Roof Curb Stock No.
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4c454
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Recommended 8 In. Fixed Curb Item No.
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4HX41
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Max. Inlet Temp.
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180 Degrees
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Drive Type
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Belt Drive
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Housing Material
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Aluminum
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Requires
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Roof curb for new installations
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Includes
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NEMA 1 Junction Box
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Wheel Type
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Backward Inclined
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Standards
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AMCA Sound and Air, UL/cUL 705
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Motor HP Range
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1/4 to 2
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CFM Range
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3320 to 6640 @ 0.0 in SP
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Item
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Centrifugal Downblast Roof Exhaust Fan
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Bearing Type
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Regreasable Pillow Block
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Recommended 12 In. Fixed Curb Item No.
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2RB79
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Adj. 12 3/8"H Roof Curb Stock No.
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2ZV83
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Recommended Damper Stock No.
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4HX67
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Wheel Material
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Aluminum
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Mounting Location
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Roof
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RPM Range
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600 to 1200
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Speed Controllable
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No
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Features
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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
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Application
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Industrial and Commercial Buildings
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For Air Type
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Clean Air
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Minimum Airflow
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2,087 cfm
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Safety Features
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Birdscreen, Windband
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Assembly
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Unassembled
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Power Source
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Electric Motor
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Maximum Static Pressure
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1 3/4 in wc
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Maximum Inlet Air Temperature
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180 Degrees F
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Noise Level @ 0.000 in SP @ 5 ft
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20 sones
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Spark Resistant Construction Type
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A
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Minimum Motor Speed
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600 RPM
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Compatible Curb Manufacturer Part Number
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2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
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Includes Drive Package
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No
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Mount Type
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Roof Curb
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Maximum Airflow
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6,640 cfm
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Sound Level
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Fan RPM 1090: 20.0 sones @ 0.000 in SP and 5 ft, 19.6 sones @ 0.125 in SP and 5 ft, 18.9 sones @ 0.250 in SP and 5 ft, 18.4 sones @ 0.375 in SP and 5 ft, 18.1 sones @ 0.500 in SP and 5 ft, 17.8 sones @ 0.625 in SP and 5 ft, 17.5 sones @ 0.750 in SP and 5 ft, 17.2 sones @ 0.875 in SP and 5 ft, 16.8 sones @ 1.000 in SP and 5 ft, 15.8 sones @ 1.250 in SP and 5 ft, Fan RPM 1200: 24.0 sones @ 0.000 in SP and 5 ft, 23.0 sones @ 0.125 in SP and 5 ft, 23.0 sones @ 0.250 in SP and 5 ft, 22.0 sones @ 0.375 in SP and 5 ft, 22.0 sones @ 0.500 in SP and 5 ft, 21.0 sones @ 0.625 in SP and 5 ft, 21.0 sones @ 0.750 in SP and 5 ft, 21.0 sones @ 0.875 in SP and 5 ft, 21.0 sones @ 1.000 in SP and 5 ft, 19.9 sones @ 1.250 in SP and 5 ft, 18.6 sones @ 1.500 in SP and 5 ft, 16.7 sones @ 1.750 in SP and 5 ft, Fan RPM 665: 9.6 sones @ 0.000 in SP and 5 ft, 9.0 sones @ 0.125 in SP and 5 ft, 8.5 sones @ 0.250 in SP and 5 ft, 7.7 sones @ 0.375 in SP and 5 ft, 6.7 sones @ 0.500 in SP and 5 ft, Fan RPM 730: 8.5 sones @ 0.000 in SP and 5 ft, 7.9 sones @ 0.125 in SP and 5 ft, 7.3 sones @ 0.250 in SP and 5 ft, 6.1 sones @ 0.375 in SP and 5 ft, Fan RPM 770: 12.1 sones @ 0.000 in SP and 5 ft, 11.0 sones @ 0.125 in SP and 5 ft, 10.7 sones @ 0.250 in SP and 5 ft, 10.2 sones @ 0.375 in SP and 5 ft, 9.8 sones @ 0.500 in SP and 5 ft, 9.3 sones @ 0.625 in SP and 5 ft, Fan RPM 860: 14.1 sones @ 0.000 in SP and 5 ft, 13.3 sones @ 0.125 in SP and 5 ft, 12.9 sones @ 0.250 in SP and 5 ft, 12.4 sones @ 0.375 in SP and 5 ft, 11.8 sones @ 0.500 in SP and 5 ft, 11.4 sones @ 0.625 in SP and 5 ft, 11.1 sones @ 0.750 in SP and 5 ft, 11.4 sones @ 0.875 in SP and 5 ft, Fan RPM 965: 16.7 sones @ 0.000 in SP and 5 ft, 16.0 sones @ 0.125 in SP and 5 ft, 15.4 sones @ 0.250 in SP and 5 ft, 15.0 sones @ 0.375 in SP and 5 ft, 14.5 sones @ 0.500 in SP and 5 ft, 14.1 sones @ 0.625 in SP and 5 ft, 13.7 sones @ 0.750 in SP and 5 ft, 13.2 sones @ 0.875 in SP and 5 ft, 13.0 sones @ 1.000 in SP and 5 ft
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Includes Motor
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No
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Maximum Motor Horsepower
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2 hp
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Minimum Motor Horsepower
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1/4 hp
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Base Shape
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Square
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Maximum Fan Speed
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1,200 RPM
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Brake Horsepower
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13/50 hp
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Resistance Properties
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Weather Resistant
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Maximum Motor Speed
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1,200 RPM
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Housing Material Fabrication
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Spun
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Electrical Connection
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Power Cord
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For High-Static Pressure Applications
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No
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Motor Location
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Out of Airstream
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