Home / Downblast Less Drive Package, 21-1/2In

Downblast Less Drive Package, 21-1/2In

SKU
Brand Dayton
Categories
Description Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Mounting Location Roof, Wheel Diameter 21 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Minimum Airflow 2,087 cfm, Maximum Airflow 6,640 cfm, Maximum Motor Horsepower 2 hp, Minimum Motor Horsepower 1/4 hp, Minimum Motor Speed 600 RPM, Maximum Motor Speed 1,200 RPM, Maximum Static Pressure 1 3/4 in wc, For High-Static Pressure Applications No
graingerSKU: 4YU98, mscSKU: , zoro_no: G1222426, mongo_id: 65bbe5923aaddbd5a9fd1366

Web Price

$1,971.24 / each

Qty

Product Details

Adj. 12 3/8H Roof Curb Stock No. 2ZV83

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

Application Industrial and Commercial Buildings

Assembly Unassembled

Base Diameter Not Applicable

Base Dimension 30 in Square

Base Height 1.8 in

Base Length 30 in

Base Shape Square

Base Size - Roof Ventilators 30 in x 30 in

Base Width 30 in

Bearing Type Regreasable Pillow Block

Brake Horsepower 13/50 hp

CFM Range 3320 to 6640 @ 0.0 in SP

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

Country of Origin (subject to change) United States

Cutout Length 25.5 in

Cutout Size 25.5 in L x 25.5 in W

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 With Motor Included No

Drive Type Belt Drive

Drive Type - Roof Ventilators Belt Drive

Duty Rating - Roof Ventilators Hazardous Location

Electrical Connection Power Cord

Features Air Handling Quality Bearings Meet Minimum of L10-100,000 Hours, Features a Fully Rolled Windband Bead for Increased Stability and Easy Transport, Fresh Outside Air is Drawn in Under the Motor Cover to Maximize Motor Life, Nema 1 Junction Box Located in Motor Enclosure, Nonoverloading Centrifugal Wheel Design, Optional Nema 1 and 4 Disconnects Available

For Air Type Clean Air

For Airflow (Dependent on Motor) 2,087 cfm to 6,640 cfm

For High-Static Pressure Applications No

Housing Length 35.5 in

Housing Material Aluminum

Housing Material Fabrication Spun

Housing Width 35.5 in

Includes NEMA 1 Junction Box

Includes Drive Package No

Includes Motor No

Item - Roof Ventilators Downblast Ventilator

Material Aluminum Blade with Aluminum Housing

Max. Inlet Temp. 180 Degrees

Maximum Airflow 6,640 cfm

Maximum Fan Speed 1,200 RPM

Maximum Inlet Air Temperature 180 Degrees F

Maximum Motor Horsepower 2 hp

Maximum Motor Speed 1,200 RPM

Maximum Static Pressure 1 3/4 in wc

Minimum Airflow 2,087 cfm

Minimum Motor Horsepower 1/4 hp

Minimum Motor Speed 600 RPM

Motor HP Range 1/4 to 2

Motor Location Out of Airstream

Mount Type Roof Curb

Mounting Location Roof

Mounting Location - Roof Ventilators Roof

Noise Level @ 0.000 in SP @ 5 ft 20 sones

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 34 3/8 in

Package Quantity 1

Power Source Electric Motor

Propeller Shaft Diameter 3/4 in

Recommended 12 In. Fixed Curb Item No. 2RB79

Recommended 8 In. Fixed Curb Item No. 4HX41

Recommended Damper Size (In.) 23 x 23

Recommended Damper Stock No. 4HX67

Requires Roof curb for new installations

Resistance Properties Weather Resistant

RPM Range 600 to 1200

Safety Features Birdscreen, Windband

Shaft Dia. Sheave End 3/4 in

Shaft Dia. Wheel End 3/4 in

Sound Level Fan RPM 1090: 20.0 sones @ 0.000 in SP and 5 ft, 19.6 sones @ 0.125 in SP and 5 ft, 18.9 sones @ 0.250 in SP and 5 ft, 18.4 sones @ 0.375 in SP and 5 ft, 18.1 sones @ 0.500 in SP and 5 ft, 17.8 sones @ 0.625 in SP and 5 ft, 17.5 sones @ 0.750 in SP and 5 ft, 17.2 sones @ 0.875 in SP and 5 ft, 16.8 sones @ 1.000 in SP and 5 ft, 15.8 sones @ 1.250 in SP and 5 ft, Fan RPM 1200: 24.0 sones @ 0.000 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, 22.0 sones @ 0.375 in SP and 5 ft, 22.0 sones @ 0.500 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, 19.9 sones @ 1.250 in SP and 5 ft, 18.6 sones @ 1.500 in SP and 5 ft, 16.7 sones @ 1.750 in SP and 5 ft, Fan RPM 665: 9.6 sones @ 0.000 in SP and 5 ft, 9.0 sones @ 0.125 in SP and 5 ft, 8.5 sones @ 0.250 in SP and 5 ft, 7.7 sones @ 0.375 in SP and 5 ft, 6.7 sones @ 0.500 in SP and 5 ft, Fan RPM 730: 8.5 sones @ 0.000 in SP and 5 ft, 7.9 sones @ 0.125 in SP and 5 ft, 7.3 sones @ 0.250 in SP and 5 ft, 6.1 sones @ 0.375 in SP and 5 ft, Fan RPM 770: 12.1 sones @ 0.000 in SP and 5 ft, 11.0 sones @ 0.125 in SP and 5 ft, 10.7 sones @ 0.250 in SP and 5 ft, 10.2 sones @ 0.375 in SP and 5 ft, 9.8 sones @ 0.500 in SP and 5 ft, 9.3 sones @ 0.625 in SP and 5 ft, Fan RPM 860: 14.1 sones @ 0.000 in SP and 5 ft, 13.3 sones @ 0.125 in SP and 5 ft, 12.9 sones @ 0.250 in SP and 5 ft, 12.4 sones @ 0.375 in SP and 5 ft, 11.8 sones @ 0.500 in SP and 5 ft, 11.4 sones @ 0.625 in SP and 5 ft, 11.1 sones @ 0.750 in SP and 5 ft, 11.4 sones @ 0.875 in SP and 5 ft, Fan RPM 965: 16.7 sones @ 0.000 in SP and 5 ft, 16.0 sones @ 0.125 in SP and 5 ft, 15.4 sones @ 0.250 in SP and 5 ft, 15.0 sones @ 0.375 in SP and 5 ft, 14.5 sones @ 0.500 in SP and 5 ft, 14.1 sones @ 0.625 in SP and 5 ft, 13.7 sones @ 0.750 in SP and 5 ft, 13.2 sones @ 0.875 in SP and 5 ft, 13.0 sones @ 1.000 in SP and 5 ft

Spark Resistant Construction Type A

Speed Controllable No

Standards AMCA Sound and Air, UL/cUL 705

Wheel Dia. 21 1/2 in

Wheel Diameter 21 in

Wheel Material Aluminum

Wheel Type Backward Inclined