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 34⅜ inch width, 36⅛ inch height, 35½ inch length. This centrifugal downblast roof exhaust fan is designed for use with: industrial and commercial buildings. In addition, it is roof mountable, 6,640 cfm air flow, 35½ inch diameter, and 2 max horsepower.
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyUnassembled
Wheel Diameter21 in
Base Width30 in
Minimum Airflow2,087 cfm
Maximum Motor Horsepower2 hp
Minimum Motor Speed600 RPM
Maximum Static Pressure1 3/4 in wc
StandardsAMCA Sound and Air, UL/cUL 705
Wheel MaterialAluminum
Overall Diameter35 1/2 in
Overall Length35 1/2 in
Includes Drive PackageDrive Package Not Included
ApplicationIndustrial and Commercial Buildings
Bearing TypeRegreasable Pillow Block
Compatible Curb Manufacturer Part Number2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
Cutout Size25.5 in L x 25.5 in W
Electrical ConnectionPower Cord
Housing Length35.5 in
Housing Width35.5 in
Maximum Fan Speed1,200 RPM
Motor LocationOut of Airstream
Noise Level @ 0.000 in SP @ 5 ft20 sones
Power SourceElectric Motor
Resistance PropertiesWeather Resistant
Sound LevelFan 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
Speed ControllableSpeed Not Controllable
Drive TypeBelt Drive
Mounting LocationRoof
Base Length30 in
Base ShapeSquare
Maximum Airflow6,640 cfm
Minimum Motor Horsepower1/4 hp
Maximum Motor Speed1,200 RPM
For High-Static Pressure ApplicationsNot For High-Static Pressure Applications
For Air TypeClean Air
Housing MaterialAluminum
Overall Height36 1/8 in
Overall Width34 3/8 in
Includes MotorMotor Not Included
Base Height1.8 in
Brake Horsepower13/50 hp
Cutout Length25.5 in
Damper Size23 x 23 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 Diameter3/4 in
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Country of OriginUnited States
(subject to change)