This centrifugal downblast roof exhaust fan includes NEMA 1 junction box, and is made of aluminum. It features a fully rolled windband bead, fresh outside air is drawn in under the motor cover, and more and measures 36 inch width, 37¾ inch height, 50 inch length. This centrifugal downblast roof exhaust fan is designed for use with: industrial and commercial buildings. In addition, it is roof mountable, 14,416 cfm air flow, 50 inch diameter, and 5 max horsepower.
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyUnassembled
Wheel Diameter30 in
Base Width42 in
Minimum Airflow4,340 cfm
Maximum Motor Horsepower5 hp
Minimum Motor Speed365 RPM
Maximum Static Pressure2 in wc
StandardsAMCA Sound and Air, UL/cUL 705
Wheel MaterialAluminum
Overall Diameter50 in
Overall Length50 in
Includes Drive PackageDrive Package Not Included
ApplicationIndustrial and Commercial Buildings
Bearing TypeRegreasable Pillow Block
Compatible Curb Manufacturer Part Number2RB81, 2ZV85, 3C597, 3C598, 4HX43, 4HX51
Cutout Size37.5 in L x 37.5 in W
Electrical ConnectionPower Cord
Housing Length50 in
Housing Width50 in
Maximum Fan Speed890 RPM
Motor LocationOut of Airstream
Noise Level @ 0.000 in SP @ 5 ft9.2 sones
Power SourceElectric Motor
Resistance PropertiesWeather Resistant
Sound LevelFan RPM 365: 9.2 sones @ 0.000 in SP and 5 ft, 6.2 sones @ 0.125 in SP and 5 ft, 5.7 sones @ 0.250 in SP and 5 ft, Fan RPM 420: 9.6 sones @ 0.000 in SP and 5 ft, 8.0 sones @ 0.125 in SP and 5 ft, 7.0 sones @ 0.250 in SP and 5 ft, 6.5 sones @ 0.375 in SP and 5 ft, Fan RPM 475: 11.4 sones @ 0.000 in SP and 5 ft, 10.6 sones @ 0.125 in SP and 5 ft, 9.6 sones @ 0.250 in SP and 5 ft, 8.8 sones @ 0.375 in SP and 5 ft, 8.1 sones @ 0.500 in SP and 5 ft, Fan RPM 530: 13.4 sones @ 0.000 in SP and 5 ft, 12.9 sones @ 0.125 in SP and 5 ft, 12.2 sones @ 0.250 in SP and 5 ft, 11.5 sones @ 0.375 in SP and 5 ft, 10.7 sones @ 0.500 in SP and 5 ft, 10.0 sones @ 0.625 in SP and 5 ft, 9.4 sones @ 0.750 in SP and 5 ft, Fan RPM 600: 15.9 sones @ 0.000 in SP and 5 ft, 15.4 sones @ 0.125 in SP and 5 ft, 14.9 sones @ 0.250 in SP and 5 ft, 14.3 sones @ 0.375 in SP and 5 ft, 13.8 sones @ 0.500 in SP and 5 ft, 13.2 sones @ 0.625 in SP and 5 ft, 12.2 sones @ 0.750 in SP and 5 ft, 11.1 sones @ 0.875 in SP and 5 ft, Fan RPM 665: 18.8 sones @ 0.000 in SP and 5 ft, 18.2 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, 16.3 sones @ 0.625 in SP and 5 ft, 15.7 sones @ 0.750 in SP and 5 ft, 14.8 sones @ 0.875 in SP and 5 ft, 13.7 sones @ 1.000 in SP and 5 ft, Fan RPM 760: 23.0 sones @ 0.000 in SP and 5 ft, 22.0 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, 19.8 sones @ 0.750 in SP and 5 ft, 19.3 sones @ 0.875 in SP and 5 ft, 18.6 sones @ 1.000 in SP and 5 ft, 16.8 sones @ 1.250 in SP and 5 ft, 14.0 sones @ 1.500 in SP and 5 ft, Fan RPM 890: 28.0 sones @ 0.000 in SP and 5 ft, 28.0 sones @ 0.125 in SP and 5 ft, 28.0 sones @ 0.250 in SP and 5 ft, 27.0 sones @ 0.375 in SP and 5 ft, 27.0 sones @ 0.500 in SP and 5 ft, 26.0 sones @ 0.625 in SP and 5 ft, 26.0 sones @ 0.750 in SP and 5 ft, 25.0 sones @ 0.875 in SP and 5 ft, 25.0 sones @ 1.000 in SP and 5 ft, 24.0 sones @ 1.250 in SP and 5 ft, 22.0 sones @ 1.500 in SP and 5 ft, 21.0 sones @ 1.750 in SP and 5 ft, 18.7 sones @ 2.000 in SP and 5 ft
Speed ControllableSpeed Not Controllable
Drive TypeBelt Drive
Mounting LocationRoof
Base Length42 in
Base ShapeSquare
Maximum Airflow14,416 cfm
Minimum Motor Horsepower1/3 hp
Maximum Motor Speed890 RPM
For High-Static Pressure ApplicationsNot For High-Static Pressure Applications
For Air TypeClean Air
Housing MaterialAluminum
Overall Height37 3/4 in
Overall Width36 in
Includes MotorMotor Not Included
Base Height1.8 in
Brake Horsepower7/20 hp
Cutout Length37.5 in
Damper Size35 x 35 in
FeaturesAir 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
Housing Material FabricationSpun
IncludesNEMA 1 Junction Box
Maximum Inlet Air Temperature180 Degrees F
Mount TypeRoof Curb
Number of Speeds1
Propeller Shaft Diameter1 in
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Country of OriginUnited States
(subject to change)