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 50 inch width, 40⅛ inch height, 50 inch length. This centrifugal downblast roof exhaust fan is designed for use with: industrial and commercial buildings. In addition, it is three-phase, 60 Hz, is roof mountable, 12,007 cfm @ 0.125 in SP air flow, 50 inch diameter, and 3 horsepower
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyAssembled
Base Length42 in
Base ShapeSquare
Phase3
Exhaust Airflow @ 0.000 in SP12,311 cfm
High-Efficiency MotorNo High-Efficiency Motor
Includes Drive PackageDrive Package Included
Mounting LocationRoof
Exhaust Airflow @ 0.500 in SP10,997 cfm
Housing MaterialAluminum
Motor EnclosureOpen Dripproof
Overall Diameter50 in
Overall Length50 in
Airflow @ 0.000 in SP12,311 cfm
Base Height1 3/4 in
Brake Horsepower3 3/20 hp
Current8.4/4
Cutout Size39.5 in L x 39.5 in W
Electrical ConnectionPower Cord
Exhaust Airflow @ 0.250 in SP11,704 cfm
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 Length50 in
Housing Width50 in
Maximum Ambient Temperature180 Degrees F
Maximum Inlet Air Temperature180 Degrees F
Mount TypeRoof Curb
Resistance PropertiesWeather Resistant
Sound Level14.0 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
Speed ControllableSpeed Not Controllable
Drive TypeBelt Drive
Wheel Diameter30 1/2 in
Base Width42 in
Nameplate Voltage208 to 230/460V AC
Motor Horsepower3 hp
For High-Static Pressure ApplicationsNot For High-Static Pressure Applications
For Air TypeClean Air
Includes MotorMotor Included
Maximum Static Pressure1 1/2 in wc
Wheel MaterialAluminum
Number of Speeds1
StandardsAMCA Sound and Air, CSA, UL/cUL 705
Overall Height40 1/8 in
Overall Width50 in
ApplicationIndustrial and Commercial Buildings
Bearing TypeRegreasable Pillow Block
Compatible Curb Manufacturer Part Number2RB81, 2ZV84, 3C438, 4C455, 4HX43, 4HX51
Cutout Length39.5 in
Damper Size35 x 35 in
Exhaust Airflow @ 0.125 in SP12,007 cfm
Exhaust Airflow @ 0.375 in SP11,357 cfm
Frequency60 Hz
Housing Material FabricationSpun
IncludesNEMA 1 Junction Box
Maximum Fan Speed760 RPM
Motor LocationOut of Airstream
Propeller Shaft Diameter1 in
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Country of OriginUnited States
(subject to change)
Compliance and Restrictions
Environmentally Preferable
This item has been designated by the manufacturer as an environmentally preferable product (EPP) for the following reasons: Green Environmental Attribute: Product Contributes To Reducing Energy Consumption Green Certification or Other Recognition: NEMA Premium(R) Rated