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

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

product price: $2,239.99
/ea
Item requires special delivery charges. A $50.00 per item surcharge will be applied.
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Key Features

  • 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
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Product Information

Dimensions

Base Size - Roof Ventilators 30 in x 30 in
Wheel Dia. 21 1/2 in
Dimension A 30 in
Dimension D 5 1/2 in
Base Height 1 3/4 in
Overall Dia. 35 1/2 in
Base Width 30 in
Base Length 30 in
Shaft Dia. Wheel End 3/4 in
Base Square Size - Roof Ventilators 30" x 30"
Dimension C 34 3/8 in
Dimension B 35 1/2 in
Overall Height 36 1/8 in
Wheel Diameter 21 1/2 in
Housing Width 35.5 in
Housing Length 35.5 in
Overall Length 35 1/2 in
Propeller Shaft Diameter 3/4 in
Overall Diameter 35 1/2 in
Overall Width 35 1/2 in
Damper Size 23 x 23 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 2 hp
CFM @ 0.000-In. SP 6640
CFM @ 1.75-In. SP 3077
CFM @ 0.250-In. SP 6336
Phase 3
Adj. 6 3/8"H Roof Curb Stock No. 4c454
Wheel Material Aluminum
CFM @ 0.875-In. SP 5477
Max. Inlet Temp. 180 Degrees
Recommended 8 In. Fixed Curb Item No. 4HX41
CFM @ 0.500-In. SP 5969
Hz 60
Includes Drive Package, NEMA 1 Junction Box
Item Centrifugal Downblast Roof Exhaust Fan
CFM @ 0.625-In. SP 5813
Drive Package Included Yes
RPM 1200
Housing Material Aluminum
Mounting Location Roof
CFM @ 0.375-In. SP 6145
CFM @ 0.125-In. SP 6494
Assembled/Unassembled Unassembled
Sones @ 0.250-In. SP @ 5 Ft. 23
CFM @ 0.750-In. SP 5651
Speed Controllable No
CFM @ 1.000-In. SP 5274
Adj. 12 3/8"H Roof Curb Stock No. 3C437
Agency Compliance AMCA Sound & Air, UL/cUL 705
Drive Type Belt Drive
CFM @ 1.250-In. SP 4829
Wheel Type Backward Inclined
Max. BHP 2.09
Motor Voltage 208/230/460
Recommended 12 In. Fixed Curb Item No. 4HX49
CFM @ 1.500-In. SP 4177
Sones @ 0.500-In. SP @ 5 Ft. 22
Motor HP 2
Sones @ 0.125-In. SP @ 5 Ft. 23
Standards AMCA Sound and Air, UL/cUL 705
Bearing Type Regreasable Pillow Block
Housing Material Fabrication Spun
For Air Type Clean Air
Sound Level 16.7 sones @ 1.750 in SP and 5 ft, 18.6 sones @ 1.500 in SP and 5 ft, 19.9 sones @ 1.250 in SP and 5 ft, 21.0 sones @ 0.625 in SP and 5 ft, 21.0 sones @ 0.750 in SP and 5 ft, 21.0 sones @ 0.875 in SP and 5 ft, 21.0 sones @ 1.000 in SP and 5 ft, 22.0 sones @ 0.375 in SP and 5 ft, 22.0 sones @ 0.500 in SP and 5 ft, 23.0 sones @ 0.125 in SP and 5 ft, 23.0 sones @ 0.250 in SP and 5 ft, 24.0 sones @ 0.000 in SP and 5 ft
Application Industrial and Commercial Applications
Current 6.0 to 5.8/2.9 A
Exhaust Airflow @ 0.000 in SP 6,640 cfm
Airflow @ 0.000 in SP 6,640 cfm
Exhaust Airflow @ 0.375 in SP 6,145 cfm
Motor Location Out of Airstream
Motor Speed 1,745 RPM
Base Shape Square
Exhaust Airflow @ 0.250 in SP 6,336 cfm
Maximum Inlet Air Temperature 180 Degrees F
Spark Resistant Construction Type A
Features Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure
High-Efficiency Motor No
Brake Horsepower 2 9/100 hp
Exhaust Airflow @ 0.500 in SP 5,969 cfm
Safety Features Birdscreen, Windband
Resistance Properties Weather Resistant
Assembly Unassembled
For High-Static Pressure Applications No
Exhaust Airflow @ 0.125 in SP 6,494 cfm
Motor Enclosure Open Dripproof
Maximum Fan Speed 1,200 RPM
Nameplate Voltage 208-230/460V AC
Motor Horsepower 2 hp
Includes Drive Package Yes
Mount Type Roof Curb
Compatible Curb Manufacturer Part Number 2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
Frequency 60 Hz
Electrical Connection Power Cord
Maximum Static Pressure 1 3/4 in wc
Includes Motor Yes

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 208-230/460V AC, Phase 3, Motor Horsepower 2 hp, Exhaust Airflow @ 0.000 in SP 6,640 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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