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

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

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Brand Dayton
Categories
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 1/2 hp, Exhaust Airflow @ 0.000 in SP 4,261 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
graingerSKU: 7A569, mscSKU: , zoro_no: G3497146, mongo_id: 65bbe7c93aaddbd5a90b6b8c

Web Price

$2,131.24 / each

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Product Details

Adj. 12 3/8H Roof Curb Stock No. 3C437

Adj. 6 3/8H Roof Curb Stock No. 4c454

Agency Compliance AMCA Sound & Air, UL/cUL 705

Airflow @ 0.000 in SP 4,261 cfm

Airflow @ 0.000 in SP - Range 2,000 to 4,999 cfm

Application Industrial and Commercial Applications

Assembled/Unassembled Unassembled

Assembly Unassembled

Base Diameter Not Applicable

Base Dimension 30 in Square

Base Height 1 3/4 in

Base Length 30 in

Base Shape Square

Base Size - Roof Ventilators 30 in x 30 in

Base Square Size - Roof Ventilators 30 x 30

Base Width 30 in

Bearing Type Regreasable Pillow Block

Brake Horsepower 11/20 hp

CFM @ 0.000-In. SP 4261

CFM @ 0.125-In. SP 4013

CFM @ 0.250-In. SP 3744

CFM @ 0.375-In. SP 3477

CFM @ 0.500-In. SP 3141

CFM @ 0.625-In. SP 2643

Compatible Curb Manufacturer Part Number 2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49

Country of Origin (subject to change) Multiple

Current 7.6/3.7 to 3.8 A

Damper Size 23 x 23 in

Dimension A 30 in

Dimension B 35 1/2 in

Dimension C 34 3/8 in

Dimension D 5 1/2 in

Drive Package Included Yes

Drive Package With Motor Included Yes

Drive Type Belt Drive

Drive Type - Roof Ventilators Belt Drive

Duty Rating - Roof Ventilators Standard

Electrical Connection Power Cord

Exhaust Airflow @ 0.000 in SP 4,261 cfm

Exhaust Airflow @ 0.000 in SP - Range 2,000 to 4,999 cfm

Exhaust Airflow @ 0.125 in SP 4,013 cfm

Exhaust Airflow @ 0.250 in SP 3,744 cfm

Exhaust Airflow @ 0.375 in SP 3,477 cfm

Exhaust Airflow @ 0.500 in SP 3,141 cfm

Exhaust Airflow @ 0.500 in SP - Range 2,000 to 4,999 cfm

Features Fully Rolled Windband Bead for Increased Stability and Easy Transport, NEMA 1 Junction Box Located in Motor Enclosure

For Air Type Clean Air

For High-Static Pressure Applications No

Frequency 60 Hz

High-Efficiency Motor No

Housing Length 35.5 in

Housing Material Aluminum

Housing Material Fabrication Spun

Housing Width 35.5 in

Hz_ 60

Includes Drive Package, NEMA 1 Junction Box

Includes Drive Package Yes

Includes Motor Yes

Item - Roof Ventilators Downblast Ventilator

Material Aluminum Blade with Aluminum Housing

Max. BHP 0.55

Max. Inlet Temp. 180 Degrees

Maximum Fan Speed 770 RPM

Maximum Inlet Air Temperature 180 Degrees F

Maximum Static Pressure 5/8 in wc

Motor Efficiency Standard-Efficiency Motors

Motor Enclosure Open Dripproof

Motor Enclosure Design Open Dripproof (ODP)

Motor Horsepower 1/2 hp

Motor HP 1/2

Motor HP - Roof Ventilators 1/2 hp

Motor Location Out of Airstream

Motor Speed 1,725 RPM

Motor Voltage 115/208/230

Mount Type Roof Curb

Mounting Location Roof

Mounting Location - Roof Ventilators Roof

Nameplate Voltage 115/208-230V AC

Nominal Voltage 115/208-230V AC

Number of Speeds 1

Overall Dia. 35 1/2 in

Overall Diameter 35 1/2 in

Overall Height 36 1/8 in

Overall Length 35 1/2 in

Overall Width 35 1/2 in

Package Quantity 1

Phase 1

Propeller Shaft Diameter 3/4 in

Recommended 12 In. Fixed Curb Item No. 4HX49

Recommended 8 In. Fixed Curb Item No. 4HX41

Resistance Properties Weather Resistant

RPM 770

Safety Features Birdscreen, Windband

Shaft Dia. Wheel End 3/4 in

Sones @ 0.125-In. SP @ 5 Ft. 11.0

Sones @ 0.250-In. SP @ 5 Ft. 10.7

Sones @ 0.500-In. SP @ 5 Ft. 9.8

Sound Level 10.2 sones @ 0.375 in SP and 5 ft, 10.7 sones @ 0.250 in SP and 5 ft, 11.0 sones @ 0.125 in SP and 5 ft, 12.1 sones @ 0.000 in SP and 5 ft, 9.3 sones @ 0.625 in SP and 5 ft, 9.8 sones @ 0.500 in SP and 5 ft

Spark Resistant Construction Type A

Speed Controllable No

Standards AMCA Sound and Air, UL/cUL 705

Voltage - Roof Ventilators 115V AC/208V AC/230V AC

Wheel Dia. 21 1/2 in

Wheel Diameter 21 1/2 in

Wheel Material Aluminum

Wheel Type Backward Inclined