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 38⅜ inch width, 40⅛ inch height, 42¾ inch length. This centrifugal downblast roof exhaust fan is designed for use with: industrial and commercial buildings. In addition, it is roof mountable, 7,485 cfm air flow, and 42¾ inch diameter, and 2 max horsepower.
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyUnassembled
Wheel Diameter24 in
Base Width34 in
Minimum Airflow2,526 cfm
Maximum Motor Horsepower2 hp
Minimum Motor Speed500 RPM
Maximum Static Pressure1 1/2 in wc
StandardsAMCA Sound and Air, UL/cUL 705
Wheel MaterialAluminum
Overall Diameter42 3/4 in
Overall Length42 3/4 in
Includes Drive PackageDrive Package Not Included
ApplicationIndustrial and Commercial Buildings
Bearing TypeRegreasable Pillow Block
Compatible Curb Manufacturer Part Number2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50
Cutout Size29.5 in L x 29.5 in W
Electrical ConnectionPower Cord
Housing Length42.8 in
Housing Width42.8 in
Maximum Fan Speed985 RPM
Mount TypeRoof Curb
Number of Speeds1
Propeller Shaft Diameter1 in
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Drive TypeBelt Drive
Mounting LocationRoof
Base Length34 in
Base ShapeSquare
Maximum Airflow7,485 cfm
Minimum Motor Horsepower1/4 hp
Maximum Motor Speed985 RPM
For High-Static Pressure ApplicationsNot For High-Static Pressure Applications
For Air TypeClean Air
Housing MaterialAluminum
Overall Height40 1/8 in
Overall Width38 3/8 in
Includes MotorMotor Not Included
Base Height1.8 in
Brake Horsepower13/50 hp
Cutout Length29.5 in
Damper Size27 x 27 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
Noise Level @ 0.000 in SP @ 5 ft8.8 sones
Power SourceElectric Motor
Resistance PropertiesWeather Resistant
Sound LevelFan RPM 500: 8.8 sones @ 0.000 in SP and 5 ft, 8.4 sones @ 0.125 in SP and 5 ft, 7.9 sones @ 0.250 in SP and 5 ft, 7.5 sones @ 0.375 in SP and 5 ft, Fan RPM 550: 10.0 sones @ 0.000 in SP and 5 ft, 9.6 sones @ 0.125 in SP and 5 ft, 8.9 sones @ 0.250 in SP and 5 ft, 8.4 sones @ 0.375 in SP and 5 ft, 8.0 sones @ 0.500 in SP and 5 ft, Fan RPM 640: 13.0 sones @ 0.000 in SP and 5 ft, 12.8 sones @ 0.125 in SP and 5 ft, 12.1 sones @ 0.250 in SP and 5 ft, 11.2 sones @ 0.375 in SP and 5 ft, 10.5 sones @ 0.500 in SP and 5 ft, 9.7 sones @ 0.625 in SP and 5 ft, Fan RPM 710: 15.0 sones @ 0.000 in SP and 5 ft, 14.9 sones @ 0.125 in SP and 5 ft, 14.4 sones @ 0.250 in SP and 5 ft, 13.6 sones @ 0.375 in SP and 5 ft, 12.8 sones @ 0.500 in SP and 5 ft, 12.1 sones @ 0.625 in SP and 5 ft, 11.2 sones @ 0.750 in SP and 5 ft, 10.3 sones @ 0.875 in SP and 5 ft, Fan RPM 800: 16.6 sones @ 0.000 in SP and 5 ft, 16.4 sones @ 0.125 in SP and 5 ft, 16.1 sones @ 0.250 in SP and 5 ft, 15.6 sones @ 0.375 in SP and 5 ft, 15.2 sones @ 0.500 in SP and 5 ft, 14.6 sones @ 0.625 in SP and 5 ft, 14.2 sones @ 0.750 in SP and 5 ft, 13.4 sones @ 0.875 in SP and 5 ft, 12.5 sones @ 1.000 in SP and 5 ft, Fan RPM 895: 19.4 sones @ 0.000 in SP and 5 ft, 19.1 sones @ 0.125 in SP and 5 ft, 18.8 sones @ 0.250 in SP and 5 ft, 18.5 sones @ 0.375 in SP and 5 ft, 18.2 sones @ 0.500 in SP and 5 ft, 18.0 sones @ 0.625 in SP and 5 ft, 17.6 sones @ 0.750 in SP and 5 ft, 17.3 sones @ 0.875 in SP and 5 ft, 16.9 sones @ 1.000 in SP and 5 ft, 15.5 sones @ 1.250 in SP and 5 ft, Fan RPM 985: 23.0 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, 22.0 sones @ 0.625 in SP and 5 ft, 2.0 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, 20.0 sones @ 1.250 in SP and 5 ft, 19.0 sones @ 1.500 in SP and 5 ft
Speed ControllableSpeed Not Controllable
Country of OriginUnited States
(subject to change)