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  9. Downblast Vent, Belt Drive, 18-1/2 In
Dayton Downblast Vent, Belt Drive, 18-1/2 In 7A657 - main

Downblast Vent, Belt Drive, 18-1/2 In

  • Mfr # 7A657

  • Zoro # G2853121

product price: $2,005.99
/ea
Item requires special delivery charges. A $320.00 per item surcharge will be applied.

Key Features

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Standard
Drive Type - Roof Ventilators
Belt Drive
Mounting Location - Roof Ventilators
Roof
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Specifications

Product Information

MFR #
7A657
Zoro #
G2853121
UPC #
-
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
30 in x 30 in
Wheel Dia.
18 1/2 in
Base Height
1 3/4 in
Dimension D
5 1/2 in
Dimension B
35 1/2 in
Base Square Size - Roof Ventilators
30" x 30"
Overall Height
36 1/8 in
Base Length
30 in
Shaft Dia. Wheel End
3/4 in
Base Width
30 in
Overall Dia.
35 1/2 in
Dimension C
34 3/8 in
Dimension A
30 in
Wheel Diameter
18 1/2 in
Propeller Shaft Diameter
3/4 in
Overall Width
35 1/2 in
Overall Diameter
35 1/2 in
Damper Size
23 x 23 in
Housing Width
35.5 in
Overall Length
35 1/2 in
Housing Length
35.5 in

Details

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Standard
Drive Type - Roof Ventilators
Belt Drive
Mounting Location - Roof Ventilators
Roof
Number of Speeds
1
Voltage - Roof Ventilators
208V AC/230V AC/460V AC
Motor HP - Roof Ventilators
3/4 hp
CFM @ 0.000-In. SP
4102
Phase
3
CFM @ 0.500-In. SP
3596
Includes
Drive Package, NEMA 1 Junction Box
Motor Voltage
208/230/460
Housing Material
Aluminum
Agency Compliance
AMCA Sound & Air, UL/cUL 705
CFM @ 0.750-In. SP
3252
Adj. 12 3/8"H Roof Curb Stock No.
3C437
Sones @ 0.500-In. SP @ 5 Ft.
14.0
CFM @ 0.625-In. SP
3432
Motor HP
3/4
Drive Package Included
Yes
Drive Type
Belt Drive
Wheel Material
Aluminum
CFM @ 0.875-In. SP
3050
Max. BHP
0.77
Max. Inlet Temp.
180 Degrees
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Mounting Location
Roof
Sones @ 0.250-In. SP @ 5 Ft.
14.9
Hz
60
CFM @ 0.250-In. SP
3867
Recommended 12 In. Fixed Curb Item No.
4HX49
CFM @ 0.375-In. SP
3742
Wheel Type
Backward Inclined
Item
Centrifugal Downblast Roof Exhaust Fan
CFM @ 0.125-In. SP
3990
Speed Controllable
No
Sones @ 0.125-In. SP @ 5 Ft.
15.7
Assembled/Unassembled
Unassembled
CFM @ 1.000-In. SP
2811
Recommended 8 In. Fixed Curb Item No.
4HX41
RPM
1055
Standards
AMCA Sound and Air, UL/cUL 705
Bearing Type
Regreasable Pillow Block
Mount Type
Roof Curb
For High-Static Pressure Applications
No
Exhaust Airflow @ 0.375 in SP
3,742 cfm
Safety Features
Birdscreen, Windband
Maximum Static Pressure
1 in wc
Features
Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure
Sound Level
12.4 sones @ 1.000 in SP and 5 ft, 12.7 sones @ 0.875 in SP and 5 ft, 12.9 sones @ 0.750 in SP and 5 ft, 13.5 sones @ 0.625 in SP and 5 ft, 14.0 sones @ 0.500 in SP and 5 ft, 14.4 sones @ 0.375 in SP and 5 ft, 14.9 sones @ 0.250 in SP and 5 ft, 15.7 sones @ 0.125 in SP and 5 ft, 16.2 sones @ 0.000 in SP and 5 ft
Application
Industrial and Commercial Applications
Housing Material Fabrication
Spun
Exhaust Airflow @ 0.125 in SP
3,990 cfm
Exhaust Airflow @ 0.000 in SP
4,102 cfm
Maximum Inlet Air Temperature
180 Degrees F
Resistance Properties
Weather Resistant
Spark Resistant Construction Type
A
Exhaust Airflow @ 0.500 in SP
3,596 cfm
For Air Type
Clean Air
Compatible Curb Manufacturer Part Number
2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
High-Efficiency Motor
No
Motor Location
Out of Airstream
Motor Horsepower
3/4 hp
Motor Enclosure
Open Dripproof
Brake Horsepower
77/100 hp
Assembly
Unassembled
Frequency
60 Hz
Electrical Connection
Power Cord
Includes Motor
Yes
Airflow @ 0.000 in SP
4,102 cfm
Maximum Fan Speed
1,055 RPM
Base Shape
Square
Nameplate Voltage
208-230/440V AC
Exhaust Airflow @ 0.250 in SP
3,867 cfm
Includes Drive Package
Yes

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Wheel Diameter 18 1/2 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Nameplate Voltage 208-230/440V AC, Phase 3, Motor Horsepower 3/4 hp, Exhaust Airflow @ 0.000 in SP 4,102 cfm, For High-Static Pressure Applications No, High-Efficiency Motor No, For Air Type Clean Air, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof

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