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  9. Downblast Vent, Belt Drive, 21-1/2 In
Dayton Downblast Vent, Belt Drive, 21-1/2 In 7A663 - main

Downblast Vent, Belt Drive, 21-1/2 In

  • Mfr # 7A663

  • Zoro # G0558984

product price: $2,066.99
/ea
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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 #
7A663
Zoro #
G0558984
UPC #
-
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
30 in x 30 in
Overall Height
36 1/8 in
Base Length
30 in
Overall Dia.
35 1/2 in
Base Width
30 in
Base Square Size - Roof Ventilators
30" x 30"
Shaft Dia. Wheel End
3/4 in
Base Height
1 3/4 in
Wheel Dia.
21 1/2 in
Dimension D
5 1/2 in
Dimension A
30 in
Dimension C
34 3/8 in
Dimension B
35 1/2 in
Damper Size
23 x 23 in
Housing Length
35.5 in
Housing Width
35.5 in
Overall Length
35 1/2 in
Propeller Shaft Diameter
3/4 in
Overall Width
35 1/2 in
Wheel Diameter
21 1/2 in
Overall Diameter
35 1/2 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
1 hp
CFM @ 0.000-In. SP
5340
RPM
965
Adj. 12 3/8"H Roof Curb Stock No.
3C437
Motor Voltage
208/230/460
Max. BHP
1.09
Motor HP
1
Speed Controllable
No
CFM @ 0.250-In. SP
4927
CFM @ 0.625-In. SP
4285
Wheel Material
Aluminum
Item
Centrifugal Downblast Roof Exhaust Fan
Wheel Type
Backward Inclined
Housing Material
Aluminum
Assembled/Unassembled
Unassembled
Recommended 8 In. Fixed Curb Item No.
4HX41
CFM @ 1.000-In. SP
3240
Drive Type
Belt Drive
Sones @ 0.125-In. SP @ 5 Ft.
16
Phase
3
CFM @ 0.375-In. SP
4720
Sones @ 0.250-In. SP @ 5 Ft.
15.4
Max. Inlet Temp.
180 Degrees
CFM @ 0.125-In. SP
5158
CFM @ 0.875-In. SP
3689
CFM @ 0.750-In. SP
4015
Includes
Drive Package, NEMA 1 Junction Box
Sones @ 0.500-In. SP @ 5 Ft.
14.5
CFM @ 0.500-In. SP
4520
Agency Compliance
AMCA Sound & Air, UL/cUL 705
Mounting Location
Roof
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Hz
60
Recommended 12 In. Fixed Curb Item No.
4HX49
Drive Package Included
Yes
Bearing Type
Regreasable Pillow Block
Standards
AMCA Sound and Air, UL/cUL 705
Spark Resistant Construction Type
A
Compatible Curb Manufacturer Part Number
2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
Maximum Fan Speed
965 RPM
Housing Material Fabrication
Spun
Exhaust Airflow @ 0.500 in SP
4,520 cfm
Mount Type
Roof Curb
For High-Static Pressure Applications
No
For Air Type
Clean Air
Exhaust Airflow @ 0.250 in SP
4,927 cfm
Brake Horsepower
1 9/100 hp
Includes Drive Package
Yes
High-Efficiency Motor
No
Features
Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure
Exhaust Airflow @ 0.375 in SP
4,720 cfm
Motor Horsepower
1 hp
Sound Level
13.0 sones @ 1.000 in SP and 5 ft, 13.2 sones @ 0.875 in SP and 5 ft, 13.7 sones @ 0.750 in SP and 5 ft, 14.1 sones @ 0.625 in SP and 5 ft, 14.5 sones @ 0.500 in SP and 5 ft, 15.0 sones @ 0.375 in SP and 5 ft, 15.4 sones @ 0.250 in SP and 5 ft, 16.0 sones @ 0.125 in SP and 5 ft, 16.7 sones @ 0.000 in SP and 5 ft
Maximum Static Pressure
1 in wc
Motor Enclosure
Open Dripproof
Safety Features
Birdscreen, Windband
Frequency
60 Hz
Exhaust Airflow @ 0.125 in SP
5,158 cfm
Assembly
Unassembled
Airflow @ 0.000 in SP
5,340 cfm
Nameplate Voltage
208-230/440V AC
Resistance Properties
Weather Resistant
Electrical Connection
Power Cord
Maximum Inlet Air Temperature
180 Degrees F
Motor Location
Out of Airstream
Application
Industrial and Commercial Applications
Exhaust Airflow @ 0.000 in SP
5,340 cfm
Includes Motor
Yes
Base Shape
Square

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Wheel Diameter 21 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 1 hp, Exhaust Airflow @ 0.000 in SP 5,340 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, Maximum Static Pressure 1 in wc

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