Home / Downblast Less Drive Package, 24-1/2In

Downblast Less Drive Package, 24-1/2In

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Brand Dayton
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Description Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Mounting Location Roof, Wheel Diameter 24 in, Base Diameter Not Applicable, Base Length 34 in, Base Width 34 in, Base Shape Square, Minimum Airflow 2,526 cfm, Maximum Airflow 7,485 cfm, Maximum Motor Horsepower 2 hp, Minimum Motor Horsepower 1/4 hp, Minimum Motor Speed 500 RPM, Maximum Motor Speed 985 RPM, Maximum Static Pressure 1 1/2 in wc, For High-Static Pressure Applications No
graingerSKU: 5EFH8, mscSKU: , zoro_no: G2844983, mongo_id: 65bbe5b43aaddbd5a9fdf857

Web Price

$2,071.24 / each

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Product Details

Adj. 12 3/8H Roof Curb Stock No. 2ZV84

Adj. 6 3/8H Roof Curb Stock No. 3C438

Application Industrial and Commercial Buildings

Assembly Unassembled

Base Diameter Not Applicable

Base Dimension 34 in Square

Base Height 1.8 in

Base Length 34 in

Base Shape Square

Base Size - Roof Ventilators 34 in x 34 in

Base Width 34 in

Bearing Type Regreasable Pillow Block

Brake Horsepower 13/50 hp

CFM Range 3799 to 7485 @ 0.0 in SP

Compatible Curb Manufacturer Part Number 2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50

Country of Origin (subject to change) United States

Cutout Length 29.5 in

Cutout Size 29.5 in L x 29.5 in W

Damper Size 27 x 27 in

Dimension A 34 in

Dimension B 42 3/4 in

Dimension C 38 3/8 in

Dimension D 5 3/4 in

Drive Package With Motor Included No

Drive Type Belt Drive

Drive Type - Roof Ventilators Belt Drive

Duty Rating - Roof Ventilators Standard

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) 2,526 cfm to 7,485 cfm

For High-Static Pressure Applications No

Housing Length 42.8 in

Housing Material Aluminum

Housing Material Fabrication Spun

Housing Width 42.8 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 7,485 cfm

Maximum Fan Speed 985 RPM

Maximum Inlet Air Temperature 180 Degrees F

Maximum Motor Horsepower 2 hp

Maximum Motor Speed 985 RPM

Maximum Static Pressure 1 1/2 in wc

Minimum Airflow 2,526 cfm

Minimum Motor Horsepower 1/4 hp

Minimum Motor Speed 500 RPM

Motor HP Range 1/4 to 2

Mount Type Roof Curb

Mounting Location Roof

Mounting Location - Roof Ventilators Roof

Noise Level @ 0.000 in SP @ 5 ft 8.8 sones

Number of Speeds 1

Overall Dia. 38 3/8 in

Overall Diameter 42 3/4 in

Overall Height 40 1/8 in

Overall Length 42 3/4 in

Overall Width 38 3/8 in

Package Quantity 1

Power Source Electric Motor

Propeller Shaft Diameter 1 in

Recommended 12 In. Fixed Curb Item No. 2RB80

Recommended 8 In. Fixed Curb Item No. 4HX42

Recommended Damper Size (In.) 27 x 27

Recommended Damper Stock No. 4HX68

Requires Roof curb for new installations

Resistance Properties Weather Resistant

RPM Range 500 to 985

Safety Features Birdscreen, Windband

Shaft Dia. Sheave End 1 in

Shaft Dia. Wheel End 1 in

Sound Level Fan RPM 500: 8.8 sones @ 0.000 in SP and 5 ft, 8.4 sones @ 0.125 in SP and 5 ft, 7.9 sones @ 0.250 in SP and 5 ft, 7.5 sones @ 0.375 in SP and 5 ft, Fan RPM 550: 10.0 sones @ 0.000 in SP and 5 ft, 9.6 sones @ 0.125 in SP and 5 ft, 8.9 sones @ 0.250 in SP and 5 ft, 8.4 sones @ 0.375 in SP and 5 ft, 8.0 sones @ 0.500 in SP and 5 ft, Fan RPM 640: 13.0 sones @ 0.000 in SP and 5 ft, 12.8 sones @ 0.125 in SP and 5 ft, 12.1 sones @ 0.250 in SP and 5 ft, 11.2 sones @ 0.375 in SP and 5 ft, 10.5 sones @ 0.500 in SP and 5 ft, 9.7 sones @ 0.625 in SP and 5 ft, Fan RPM 710: 15.0 sones @ 0.000 in SP and 5 ft, 14.9 sones @ 0.125 in SP and 5 ft, 14.4 sones @ 0.250 in SP and 5 ft, 13.6 sones @ 0.375 in SP and 5 ft, 12.8 sones @ 0.500 in SP and 5 ft, 12.1 sones @ 0.625 in SP and 5 ft, 11.2 sones @ 0.750 in SP and 5 ft, 10.3 sones @ 0.875 in SP and 5 ft, Fan RPM 800: 16.6 sones @ 0.000 in SP and 5 ft, 16.4 sones @ 0.125 in SP and 5 ft, 16.1 sones @ 0.250 in SP and 5 ft, 15.6 sones @ 0.375 in SP and 5 ft, 15.2 sones @ 0.500 in SP and 5 ft, 14.6 sones @ 0.625 in SP and 5 ft, 14.2 sones @ 0.750 in SP and 5 ft, 13.4 sones @ 0.875 in SP and 5 ft, 12.5 sones @ 1.000 in SP and 5 ft, Fan RPM 895: 19.4 sones @ 0.000 in SP and 5 ft, 19.1 sones @ 0.125 in SP and 5 ft, 18.8 sones @ 0.250 in SP and 5 ft, 18.5 sones @ 0.375 in SP and 5 ft, 18.2 sones @ 0.500 in SP and 5 ft, 18.0 sones @ 0.625 in SP and 5 ft, 17.6 sones @ 0.750 in SP and 5 ft, 17.3 sones @ 0.875 in SP and 5 ft, 16.9 sones @ 1.000 in SP and 5 ft, 15.5 sones @ 1.250 in SP and 5 ft, Fan RPM 985: 23.0 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, 22.0 sones @ 0.625 in SP and 5 ft, 2.0 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, 20.0 sones @ 1.250 in SP and 5 ft, 19.0 sones @ 1.500 in SP and 5 ft

Spark Resistant Construction Type A

Speed Controllable No

Standards AMCA Sound and Air, UL/cUL 705

Wheel Dia. 24 1/2 in

Wheel Diameter 24 in

Wheel Material Aluminum

Wheel Type Backward Inclined