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  9. Downblast Vent, Belt Drive, 24-1/2 In
Dayton Downblast Vent, Belt Drive, 24-1/2 In 7AF21 - main

Downblast Vent, Belt Drive, 24-1/2 In

  • Mfr # 7AF21

  • Zoro # G3072711

product price: $2,411.99
/ea
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Key Features

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

Product Information

MFR #
7AF21
Zoro #
G3072711
UPC #
00799471519479
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
34 in x 34 in
Base Height
1 3/4 in
Dimension C
38 3/8 in
Dimension D
5 3/4 in
Wheel Dia.
24 1/2 in
Shaft Dia. Wheel End
1 in
Overall Dia.
42 3/4 in
Base Width
34 in
Base Length
34 in
Base Square Size - Roof Ventilators
34" x 34"
Dimension B
42 3/4 in
Overall Height
40 1/8 in
Dimension A
34 in
Wheel Diameter
24 1/2 in
Propeller Shaft Diameter
1 in
Housing Length
42.8 in
Overall Diameter
42 3/4 in
Housing Width
42.8 in
Overall Width
42 3/4 in
Overall Length
42 3/4 in
Damper Size
27 x 27 in

Details

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Hazardous Location
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
1/2 hp
CFM @ 0.000-In. SP
5371
Sones @ 0.125-In. SP @ 5 Ft.
9.7
Mounting Location
Roof
CFM @ 0.500-In. SP
3562
Agency Compliance
& G hazardous locations, F, Motor only UL Listed for Class I Groups C & D andClass II Groups E
Hz
60
Motor Voltage
208/230/460
Includes
Hazardous Location Motor
Wheel Type
Backward Inclined
Max. BHP
0.55
CFM @ 0.625-In. SP
2112
Drive Package Included
Yes
RPM
585
Item
Centrifugal Downblast Roof Exhaust Fan
Motor HP
1/2
Sones @ 0.500-In. SP @ 5 Ft.
8.2
Adj. 6 3/8"H Roof Curb Stock No.
4c455
Drive Type
Belt Drive
Speed Controllable
No
Recommended 8 In. Fixed Curb Item No.
4HX42
CFM @ 0.375-In. SP
4195
Max. Inlet Temp.
180 Degrees
Max. Operating Amps
2.3-2.4/1.2
CFM @ 0.125-In. SP
5031
Adj. 12 3/8"H Roof Curb Stock No.
2ZV84
Assembled/Unassembled
Unassembled
Wheel Material
Aluminum
Phase
3
CFM @ 0.250-In. SP
4666
Sones @ 0.250-In. SP @ 5 Ft.
9.1
Housing Material
Aluminum
Recommended 12 In. Fixed Curb Item No.
2RB80
Standards
AMCA Sound and Air, UL
Bearing Type
Regreasable Pillow Block
For High-Static Pressure Applications
No
For Air Type
Flammable Vapor
Sound Level
10.3 sones @ 0.000 in SP and 5 ft, 7.2 sones @ 0.625 in SP and 5 ft, 8.2 sones @ 0.500 in SP and 5 ft, 8.8 sones @ 0.375 in SP and 5 ft, 9.1 sones @ 0.250 in SP and 5 ft, 9.7 sones @ 0.125 in SP and 5 ft
Motor Location
Out of Airstream
Airflow @ 0.000 in SP
5,371 cfm
Hazardous Location Specification
Class I Group C, Class I Group D, Class II Group E, Class II Group F, Class II Group G
Exhaust Airflow @ 0.000 in SP
5,371 cfm
High-Efficiency Motor
No
Assembly
Unassembled
Motor Speed
1,725 RPM
Exhaust Airflow @ 0.125 in SP
5,031 cfm
Exhaust Airflow @ 0.375 in SP
4,195 cfm
Motor Enclosure
Totally Enclosed Fan Cooled
Exhaust Airflow @ 0.500 in SP
3,562 cfm
Brake Horsepower
11/20 hp
Housing Material Fabrication
Spun
Includes Drive Package
Yes
Maximum Fan Speed
585 RPM
Maximum Static Pressure
5/8 in wc
Current
2.3 to 2.4/1.2 A
Mount Type
Roof Curb
Resistance Properties
Weather Resistant
Compatible Curb Manufacturer Part Number
2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50
Exhaust Airflow @ 0.250 in SP
4,666 cfm
Includes Motor
Yes
Frequency
60 Hz
Features
Nonoverloading Centrifugal Wheel Design
Application
Industrial and Commercial Applications
Safety Features
Birdscreen
Base Shape
Square
Electrical Connection
Power Cord
Maximum Inlet Air Temperature
180 Degrees F
Motor Horsepower
1/2 hp
Nameplate Voltage
208-230/460V AC

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Wheel Diameter 24 1/2 in, Base Diameter Not Applicable, Base Length 34 in, Base Width 34 in, Base Shape Square, Nameplate Voltage 208-230/460V AC, Phase 3, Motor Horsepower 1/2 hp, Exhaust Airflow @ 0.000 in SP 5,371 cfm, For High-Static Pressure Applications No, High-Efficiency Motor No, For Air Type Flammable Vapor, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof

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