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  9. Downblast Vent, Belt Drive, 21-1/2 In
Dayton Downblast Vent, Belt Drive, 21-1/2 In 7YR30 - main

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

  • Mfr # 7YR30

  • Zoro # G2675434

product price: $1,671.99
/ea
Additional $590.00 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
Belt Drive
Mounting Location - Roof Ventilators
Roof
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Specifications

Product Information

MFR #
7YR30
Zoro #
G2675434
UPC #
-
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
30 in x 30 in
Base Height
1 3/4 in
Overall Height
36 1/8 in
Base Length
30 in
Base Square Size - Roof Ventilators
30" x 30"
Overall Dia.
35 1/2 in
Wheel Dia.
21 1/2 in
Dimension A
30 in
Dimension D
5 1/2 in
Shaft Dia. Wheel End
3/4 in
Dimension B
35 1/2 in
Base Width
30 in
Dimension C
34 3/8 in
Overall Length
35 1/2 in
Damper Size
23 x 23 in
Overall Diameter
35 1/2 in
Housing Length
35.5 in
Wheel Diameter
21 1/2 in
Overall Width
35 1/2 in
Propeller Shaft Diameter
3/4 in
Housing Width
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
115V AC/208V AC/230V AC
Motor HP - Roof Ventilators
1/4 hp
CFM @ 0.000-In. SP
3320
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Adj. 12 3/8"H Roof Curb Stock No.
3C437 or 2ZV83
CFM @ 0.125-In. SP
2984
CFM @ 0.375-In. SP
2089
Recommended 12 In. Fixed Curb Item No.
2RB79 or 4HX49
Drive Type
Belt Drive
Max. Inlet Temp.
180 Degrees
Sones @ 0.250-In. SP @ 5 Ft.
7.3
Phase
1
Item
Centrifugal Downblast Roof Exhaust Fan
Wheel Type
Backward Inclined
Agency Compliance
AMCA Sound & Air, UL/cUL 705
Wheel Material
Aluminum
Motor Voltage
115/208/230
Drive Package Included
Yes
Recommended 8 In. Fixed Curb Item No.
4HX41
Includes
Drive Package, NEMA 1 Junction Box
Hz
60
Speed Controllable
No
Max. BHP
0.26
Housing Material
Aluminum
Sones @ 0.125-In. SP @ 5 Ft.
7.9
Motor HP
1/4
Max. Operating Amps
4.6/2.2-2.3
Assembled/Unassembled
Unassembled
Mounting Location
Roof
CFM @ 0.250-In. SP
2637
RPM
600
Bearing Type
Regreasable Pillow Block
Standards
AMCA Sound and Air, UL/cUL 705
Maximum Static Pressure
3/8 in wc
Compatible Curb Manufacturer Part Number
2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
For Air Type
Clean Air
Spark Resistant Construction Type
A
Maximum Inlet Air Temperature
180 Degrees F
Resistance Properties
Weather Resistant
Electrical Connection
Power Cord
Motor Speed
1,725 RPM
Application
Industrial and Commercial Applications
Includes Drive Package
Yes
Frequency
60 Hz
Base Shape
Square
Exhaust Airflow @ 0.000 in SP
3,320 cfm
Motor Enclosure
Open Dripproof
Exhaust Airflow @ 0.250 in SP
2,637 cfm
Features
Fresh Outside Air is Drawn in Under the Motor Cover to Maximize Motor Life, Fully Rolled Windband Bead for Increased Stability and Easy Transport, Nonoverloading Centrifugal Wheel Design
Motor Location
Out of Airstream
Brake Horsepower
13/50 hp
Housing Material Fabrication
Spun
Sound Level
6.1 sones @ 0.375 in SP and 5 ft, 7.3 sones @ 0.250 in SP and 5 ft, 7.9 sones @ 0.125 in SP and 5 ft, 8.5 sones @ 0.000 in SP and 5 ft
For High-Static Pressure Applications
No
Exhaust Airflow @ 0.375 in SP
2,089 cfm
Exhaust Airflow @ 0.125 in SP
2,984 cfm
Airflow @ 0.000 in SP
3,320 cfm
Mount Type
Roof Curb
Current
4.6/2.2 to 2.3 A
Nameplate Voltage
115/208-230V AC
Maximum Fan Speed
600 RPM
Assembly
Unassembled
Includes Motor
Yes
Motor Horsepower
1/4 hp
High-Efficiency Motor
No
Safety Features
Birdscreen, Windband

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 115/208-230V AC, Phase 1, Motor Horsepower 1/4 hp, Exhaust Airflow @ 0.000 in SP 3,320 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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