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 measures 42¾ inch width, 36⅛ inch height, 42¾ inch length. This centrifugal downblast roof exhaust fan is designed for use with: industrial/commercial buildings. In addition, it is three-phase, 60 Hz, is roof mountable, 8,135 cfm @ 0.125 in SP air flow, and 42¾ inch diameter, and 2 horsepower.
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyAssembled
Base Length34 in
Base ShapeSquare
Phase3
Exhaust Airflow @ 0.000 in SP8,355 cfm
High-Efficiency MotorNo High-Efficiency Motor
Includes Drive PackageDrive Package Included
Mounting LocationRoof
Exhaust Airflow @ 0.500 in SP7,467 cfm
Housing MaterialAluminum
Motor EnclosureOpen Dripproof
Overall Diameter42 3/4 in
Overall Length42 3/4 in
Airflow @ 0.000 in SP8,355 cfm
Base Height1 3/4 in
Brake Horsepower2 3/50 hp
Current6.2 to 6.2/3.1 A
Cutout Size39.5 in L x 39.5 in W
Electrical ConnectionPower Cord
Exhaust Airflow @ 0.250 in SP7,916 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 Length42.8 in
Housing Width42.8 in
Maximum Ambient Temperature180 Degrees F
Maximum Inlet Air Temperature180 Degrees F
Motor Speed1,725 RPM
Propeller Shaft Diameter1 in
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Drive TypeBelt Drive
Wheel Diameter24 1/2 in
Base Width34 in
Nameplate Voltage208 to 230/460V AC
Motor Horsepower2 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 Height36 1/8 in
Overall Width42 3/4 in
ApplicationIndustrial and Commercial Buildings
Bearing TypeRegreasable Pillow Block
Compatible Curb Manufacturer Part Number2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50
Cutout Length39.5 in
Damper Size27 x 27 in
Exhaust Airflow @ 0.125 in SP8,135 cfm
Exhaust Airflow @ 0.375 in SP7,700 cfm
Frequency60 Hz
Housing Material FabricationSpun
IncludesNEMA 1 Junction Box
Maximum Fan Speed910 RPM
Motor LocationOut of Airstream
Mount TypeRoof Curb
Resistance PropertiesWeather Resistant
Sound Level13.6 sones @ 1.500 in SP and 5 ft, 16.7 sones @ 1.250 in SP and 5 ft, 19.2 sones @ 1.000 in SP and 5 ft, 19.4 sones @ 0.875 in SP and 5 ft, 19.6 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, 23.0 sones @ 0.125 in SP and 5 ft, 24.0 sones @ 0.000 in SP and 5 ft
Speed ControllableSpeed Not Controllable
Country of OriginUnited States
(subject to change)