1. Home
  2. /
  3. Heating & Cooling
  4. /
  5. Roof Ventilators
  6. /
  7. Direct Drive Centrifugal Exhaust Ventilators
  8. /
  9. Alu 28"Dia, 25.5"H Roof Fan w.Motor
Dayton Alu 28"Dia, 25.5"H Roof Fan w.Motor 38AX31 - main

Alu 28"Dia, 25.5"H Roof Fan w.Motor

  • Mfr # 38AX31

  • Zoro # G0317381

product price: $1,119.99
/ea
Additional $105.00 delivery surcharge applies per item.
See details

Key Features

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Standard
Drive Type - Roof Ventilators
Direct Drive
Mounting Location - Roof Ventilators
Roof
See all product information
Get a 10% off coupon
Free 30-day returns
Return Policy
Get 30 days to pay with Net 30
Apply Now
Real support from real people
Contact our U.S. based team

Specifications

Product Information

MFR #
38AX31
Zoro #
G0317381
UPC #
190735276761
Country of Origin
United States

Dimensions

Base Size - Roof Ventilators
22 in x 22 in
Dimension B
28 3/8 in
Dimension C
23 3/4 in
Base Square Size - Roof Ventilators
22" x 22"
Dimension D
4 in
Dimension A
22 in
Overall Height
25 1/2 in
Wheel Dia.
14 3/4 in
Overall Dia.
28 3/8 in
Shaft Dia. Wheel End
1/2 in
Base Width
22 in
Base Height
1 3/4 in
Base Length
22 in
Overall Width
28 3/8 in
Overall Length
28 3/8 in
Damper Size
19 x 19 in
Housing Width
28.4 in
Wheel Diameter
14 3/4 in
Housing Length
28.4 in
Cutout Length
21.5 in
Overall Diameter
28 3/8 in
Cutout Size
21.5 in L x 21.5 in W
Propeller Shaft Diameter
5/8 in

Details

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Standard
Drive Type - Roof Ventilators
Direct Drive
Mounting Location - Roof Ventilators
Roof
Number of Speeds
Variable
Voltage - Roof Ventilators
208V AC/230V AC
Motor HP - Roof Ventilators
3/4 hp
CFM @ 0.000-In. SP
1948/2412/2875
CFM @ 0.125-In. SP
1833/2318/2797
Speed Control
Variable with 43Y140
Housing Material
Aluminum
Drive Package Included
Yes
Item
Centrifugal Downblast Roof Exhaust Fan
Motor Type
Electronically Commutated
CFM @ 1.500-In. SP
-/-/1297
Hz
60
Motor HP
3/4
CFM @ 0.250-In. SP
1719/2228/2719
Sones @ 0.125-In. SP @ 5 Ft.
9.4/13.2/18.0
CFM @ 0.875-In. SP
-/1611/2299
Drive Type
Direct Drive
Phase
1
Recommended 8 In. Fixed Curb Item No.
4HX40
RPM
1050/1300/1550
Max. Inlet Temp.
130 Degrees
Recommended 12 In. Fixed Curb Item No.
2RB77
Sones @ 0.500-In. SP @ 5 Ft.
8.0/12.0/16.8
Mounting Location
Roof
Max. Operating Amps
10.1
Wheel Type
Backward Inclined
CFM @ 0.750-In. SP
-/1777/2396
CFM @ 1.250-In. SP
-/-/1910
Wheel Material
Aluminum
Max. BHP
0.24/0.46/0.79 hp
Adj. 12 3/8"H Roof Curb Stock No.
2ZV83
Sones @ 0.250-In. SP @ 5 Ft.
9.0/12.9/17.4
CFM @ 0.625-In. SP
1164/1919/2487
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Assembled/Unassembled
Assembled
CFM @ 1.000-In. SP
-/1355/2191
CFM @ 0.375-In. SP
1590/2135/2644
CFM @ 0.500-In. SP
1418/2033/2566
Motor Voltage
208/230
Speed Controllable
Variable Speed
Includes
NEMA 1 Junction Box
Standards
AMCA Sound and Air, UL/cUL 705
Application
Industrial and Commercial Applications
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
Exhaust Airflow @ 0.000 in SP
2,412 cfm
High-Efficiency Motor
Yes
Airflow @ 0.000 in SP
2,875 cfm
Current
6.6/6.1 A
Exhaust Airflow @ 0.250 in SP
2,719 cfm
Maximum Static Pressure
1 1/2 in wc
Brake Horsepower
6/25 hp
Compatible Speed Control
35YV92, 35YV93, 35YV94, 43Y140
Compatible Curb Manufacturer Part Number
2RB77, 2ZV83, 3C437, 4C454, 4HX40, 4HX48
Base Shape
Square
Motor Horsepower
3/4 hp
Includes Motor
Yes
Electrical Connection
Power Cord
Exhaust Airflow @ 0.125 in SP
2,797 cfm
Exhaust Airflow @ 0.375 in SP
2,644 cfm
Safety Features
Birdscreen, Windband
Housing Material Fabrication
Spun
Nameplate Voltage
208-230V AC
For High-Static Pressure Applications
No
Exhaust Airflow @ 0.500 in SP
2,566 cfm
Assembly
Assembled
Frequency
60 Hz
Maximum Fan Speed
1,550 RPM
Maximum Ambient Temperature
130 Degrees F
For Air Type
Clean Air
Includes Drive Package
Yes
Motor Enclosure
Open Dripproof
Maximum Inlet Air Temperature
130 Degrees F
Mount Type
Roof Curb
Spark Resistant Construction Type
A
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

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Direct Drive, Assembly Assembled, Wheel Diameter 14 3/4 in, Base Diameter Not Applicable, Base Length 22 in, Base Width 22 in, Base Shape Square, Nameplate Voltage 208-230V AC, Phase 1, Motor Horsepower 3/4 hp, Exhaust Airflow @ 0.000 in SP 2,412 cfm, For High-Static Pressure Applications No, High-Efficiency Motor Yes, For Air Type Clean Air, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.

Explore More Products