This 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 21¾ inch width, 16⅜ inch height, 21¾ inch length. This exhaust fan is designed for use with: industrial/commercial buildings. In addition, it is one-phase, 60 Hz, is roof mountable, has three speeds, is direct drive, 439 cfm @ 0.125 in SP air flow, and 21¾ inch diameter, and 1/20 horsepower.
Technical Specs
ItemCentrifugal Downblast Roof Exhaust Fan
AssemblyAssembled
Base Length19 in
Base ShapeSquare
Phase1
Exhaust Airflow @ 0.000 in SP495 cfm
High-Efficiency MotorNo High-Efficiency Motor
Includes Drive PackageDrive Package Included
Mounting LocationRoof
Exhaust Airflow @ 0.500 in SP237 cfm
Housing MaterialAluminum
Motor EnclosureOpen Air Over
Overall Diameter21 3/4 in
Overall Length21 3/4 in
Airflow @ 0.000 in SP495 cfm
Base Height1 3/4 in
Compatible Curb Manufacturer Part Number2RB75, 4C453, 4C670, 4HX38, 4HX46
Current2.0/1.6/1.3 A
Cutout Size14.5 in L x 14.5 in W
Exhaust Airflow @ 0.125 in SP439 cfm
Exhaust Airflow @ 0.375 in SP314 cfm
Frequency60 Hz
Housing Material FabricationSpun
IncludesNEMA 1 Junction Box
Maximum Fan Speed1,500 RPM
Motor Speed1,550 RPM
Mounting OrientationVertical
Propeller Shaft Diameter1/2 in
Sound Level3.6 sones @ 0.125 in SP and 5 ft, 4.2 sones @ 0.250 in SP and 5 ft, Fan RPM 1050: 3.8 sones @ 0.000 in SP and 5 ft, Fan RPM 1300: 5.4 sones @ 0.000 in SP and 5 ft, 5.4 sones @ 0.125 in SP and 5 ft, 5.5 sones @ 0.250 in SP and 5 ft, 5.9 sones @ 0.375 in SP and 5 ft, Fan RPM 1550: 7.3 sones @ 0.000 in SP and 5 ft, 7.3 sones @ 0.125 in SP and 5 ft, 7.2 sones @ 0.250 in SP and 5 ft, 7.3 sones @ 0.375 in SP and 5 ft, 7.6 sones @ 0.500 in SP and 5 ft
Speed ControllableSpeed Controllable
Drive TypeDirect Drive
Wheel Diameter8 in
Base Width19 in
Nameplate Voltage115V AC
Motor Horsepower1/20 hp
For High-Static Pressure ApplicationsNot For High-Static Pressure Applications
For Air TypeClean Air
Includes MotorMotor Included
Maximum Static Pressure1/2 in wc
Wheel MaterialAluminum
Number of Speeds3
StandardsAMCA Sound and Air, CSA, UL/cUL 705
Overall Height16 3/8 in
Overall Width21 3/4 in
ApplicationIndustrial and Commercial Buildings
Brake Horsepower1/50 hp
Compatible Speed Control48C172
Cutout Length14.5 in
Electrical ConnectionPower Cord
Exhaust Airflow @ 0.250 in SP379 cfm
FeaturesFeatures 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 Length21.8 in
Housing Width21.8 in
Maximum Ambient Temperature130 Degrees F
Maximum Inlet Air Temperature130 Degrees F
Motor TypeShaded Pole
Mount TypeRoof Curb
Safety FeaturesBirdscreen, Windband
Spark Resistant Construction TypeA
Wheel TypeBackward Inclined
Country of OriginUnited States
(subject to change)