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No. of Blades | - |
Country of Origin | USA |
Sound Level | 15.0 sones @ 0.750 in SP and 5 ft, 14.8 sones @ 0.875 in SP and 5 ft, 14.8 sones @ 1.000 in SP and 5 ft, 14.8 sones @ 1.250 in SP and 5 ft, 14.9 sones @ 1.500 in SP and 5 ft Fan RPM 1050: 9.5 sones @ 0.000 in SP and 5 ft, 9.4 sones @ 0.125 in SP and 5 ft, 9.0 sones @ 0.250 in SP and 5 ft, 8.5 sones @ 0.375 in SP and 5 ft, 8.0 sones @ 0.500 in SP and 5 ft, 7.3 sones @ 0.625 in SP and 5 ft Fan RPM 1300: 13.5 sones @ 0.000 in SP and 5 ft, 13.2 sones @ 0.125 in SP and 5 ft, 12.9 sones @ 0.250 in SP and 5 ft, 12.5 sones @ 0.375 in SP and 5 ft, 12.0 sones @ 0.500 in SP and 5 ft, 11.5 sones @ 0.625 in SP and 5 ft, 11.0 sones @ 0.750 in SP and 5 ft, 10.5 sones @ 0.875 in SP and 5 ft, 9.8 sones @ 1.000 in SP and 5 ft Fan RPM 1550: 17.7 sones @ 0.000 in SP and 5 ft, 18.0 sones @ 0.125 in SP and 5 ft, 17.4 sones @ 0.250 in SP and 5 ft, 17.2 sones @ 0.375 in SP and 5 ft, 16.8 sones @ 0.500 in SP and 5 ft, 16.0 sones @ 0.625 in SP and 5 ft |
Included Components | Drive Package with Motor |
No. of Blades |
- |
Country of Origin |
USA |
Sound Level |
15.0 sones @ 0.750 in SP and 5 ft, 14.8 sones @ 0.875 in SP and 5 ft, 14.8 sones @ 1.000 in SP and 5 ft, 14.8 sones @ 1.250 in SP and 5 ft, 14.9 sones @ 1.500 in SP and 5 ft Fan RPM 1050: 9.5 sones @ 0.000 in SP and 5 ft, 9.4 sones @ 0.125 in SP and 5 ft, 9.0 sones @ 0.250 in SP and 5 ft, 8.5 sones @ 0.375 in SP and 5 ft, 8.0 sones @ 0.500 in SP and 5 ft, 7.3 sones @ 0.625 in SP and 5 ft Fan RPM 1300: 13.5 sones @ 0.000 in SP and 5 ft, 13.2 sones @ 0.125 in SP and 5 ft, 12.9 sones @ 0.250 in SP and 5 ft, 12.5 sones @ 0.375 in SP and 5 ft, 12.0 sones @ 0.500 in SP and 5 ft, 11.5 sones @ 0.625 in SP and 5 ft, 11.0 sones @ 0.750 in SP and 5 ft, 10.5 sones @ 0.875 in SP and 5 ft, 9.8 sones @ 1.000 in SP and 5 ft Fan RPM 1550: 17.7 sones @ 0.000 in SP and 5 ft, 18.0 sones @ 0.125 in SP and 5 ft, 17.4 sones @ 0.250 in SP and 5 ft, 17.2 sones @ 0.375 in SP and 5 ft, 16.8 sones @ 0.500 in SP and 5 ft, 16.0 sones @ 0.625 in SP and 5 ft |
Included Components |
Drive Package with Motor |
Power Consumption |
- |
Current |
6.6/6.1 A |
Application |
Industrial and Commercial Applications |
Frequency |
60 Hz |
Phase |
1 |
Type of Product |
Centrifugal Downblast Roof Exhaust Fan |
Standard |
AMCA Sound and Air UL/cUL 705 |
Item Code |
38AX31 |
Speed |
1550 RPM |
Sweep Size |
- |
Color |
- |
UNSPSC Code |
40101502 |
Features |
Energy Saving Units Feature Ec Motors Which Allow up to 80% Useable Turndown Fresh Outside Air is Drawn In Under The Motor Cover to Maximize Motor Life Fully Rolled Windband Bead For Increased Stability and Easy Transport High-Efficiency Brushless DC Motor Motor Features Potentiometer Dial for Speed Adjustment Nema 1 Junction Box Located in Motor Enclosure Nonoverloading Centrifugal Wheel Design Optional Nema 1 And 4 Disconnects Available |
No. Of Speeds |
Variable |
Mount Type |
Roof Curb |
Motor Type |
Electronically Commutated |
Nameplate Voltage |
208-230 V AC |
Overall Length |
28-3/8 inch |
Mounting Location |
Roof |
Housing Material |
Aluminum |
Overall Diameter |
28-3/8 inch |
Overall Height |
25-1/2 Inch |
Overall Width |
72.07 cm |
Damper Size |
19x19 inch |
Base Height |
4.4 cm |
Base Shape |
Square |
Housing Width |
28.4 inch |
Base Width |
55.88 cm |
Assembly |
Assembled |
Base Length |
22 inch |
Speed Control |
35YV92 35YV93 35YV94 43Y140 |
Drive Type |
Direct Drive |
Motor Enclosure |
Open Dripproof |
Electrical Connections |
Power Cord |
Wheel Material |
Aluminchum |
Spark Resistant Construction Type |
A |
Maximum Ambient Temperature |
130 °F |
Air Type |
Clean Air |
High-Efficiency Motor |
Yes |
Brake Horsepower |
6/25 hp |
Wheel Type |
Backward inchclinched |
Housing Length |
28.4 inch |
Wheel Diameter |
14-3/4 inch |
Exhaust Airflow @ 0.000 in SP |
2,412 cfm |
Compatible Grainger Part Number |
2RB77 2ZV83 3C437 4C454 4HX40 4HX48 4HX66 |
Exhaust Airflow @ 0.125 in SP |
2,797 cfm |
Housing Material Fabrication |
Spun |
Exhaust Airflow @ 0.250 in SP |
2,719 cfm |
Horse Power |
3/4 hp |
Pressure Static |
1-1/2 inch wc |
Maximum Fan Speed |
1,550 RPM |
Maximum Inlet Air Temperature |
130 °F |
Exhaust Airflow @ 0.375 in SP |
2,644 cfm |
Exhaust Airflow @ 0.500 in SP |
2,566 cfm |
Speed Control Method |
Variable Speed |
Overall Height (cm) |
64.77 cm |
Overall Height (mm) |
647.70 mm |
Overall Length (cm) |
72.09 cm |
Overall Width (mm) |
720.85 mm |
Overall Diameter (mm) |
720.65 mm |
Wheel Diameter (mm) |
374.65 mm |