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Downblast Less Drive Package, 50 In

Mfr # 4YY12
Zoro # G1334663

$7,039.99

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Key Features

Drive Package With Motor Included No
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

Brand Dayton
MFR # 4YY12
Zoro # G1334663
UPC #
190735339459
Country of Origin United States
Category Belt Drive Centrifugal Exhaust Vents

Dimensions

Base Size - Roof Ventilators	64 in x 64 in
Base Length	64 in
Recommended Damper Size (In.)	50 x 50
Dimension C	50 3/4 in
Overall Height	52 1/2 in
Base Width	64 in
Base Height	1.8 in
Dimension B	83 in
Dimension D	14 1/2 in
Overall Dia.	83 in
Shaft Dia. Sheave End	1 1/4 in
Wheel Dia.	50 in
Dimension A	64 in
Shaft Dia. Wheel End	1 1/4 in
Overall Width	50 3/4 in
Overall Length	83 in
Base Dimension	64 in Square
Housing Width	83 in
Cutout Length	52.5 in
Overall Diameter	83 in
Housing Length	83 in
Wheel Diameter	50 in
Propeller Shaft Diameter	1 1/4 in
Cutout Size	52.5 in L x 52.5 in W
Damper Size	50 x 50 in

Details

Item - Roof Ventilators	Downblast Ventilator
Drive Package With Motor Included	No
Duty Rating - Roof Ventilators	Standard
Drive Type - Roof Ventilators	Belt Drive
Mounting Location - Roof Ventilators	Roof
Number of Speeds	1
Housing Material	Aluminum
Bearing Type	Regreasable Pillow Block
Item	Centrifugal Downblast Roof Exhaust Fan
Drive Type	Belt Drive
Motor HP Range	1 to 10
Wheel Type	Backward Inclined
RPM Range	214 to 460
Standards	AMCA Sound and Air, UL/cUL 705
Recommended Damper Stock No.	4HX71
Wheel Material	Aluminum
Includes	NEMA 1 Junction Box
CFM Range	17,245 to 37,068 @ 0.0 in SP
Mounting Location	Roof
Adj. 12 3/8"H Roof Curb Stock No.	2ZV87
Recommended 12 In. Fixed Curb Item No.	2RB83
Requires	Roof curb for new installations
Max. Inlet Temp.	180 Degrees
Recommended 8 In. Fixed Curb Item No.	4YY76
Speed Controllable	No
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
Application	Industrial and Commercial Buildings
Material	Aluminum Blade with Aluminum Housing
For Airflow (Dependent on Motor)	12,424 cfm to 37,068 cfm
For Air Type	Clean Air
Spark Resistant Construction Type	A
Base Shape	Square
Maximum Motor Speed	460 RPM
Maximum Fan Speed	460 RPM
Electrical Connection	Power Cord
Assembly	Unassembled
Noise Level @ 0.000 in SP @ 5 ft	9.7 sones
Includes Drive Package	No
Mount Type	Roof Curb
Minimum Motor Speed	214 RPM
Housing Material Fabrication	Spun
Minimum Airflow	12,424 cfm
Maximum Airflow	37,068 cfm
For High-Static Pressure Applications	No
Resistance Properties	Weather Resistant
Sound Level	Fan RPM 214: 9.7 sones @ 0.000 in SP and 5 ft, 9.1 sones @ 0.125 in SP and 5 ft, 8.7 sones @ 0.250 in SP and 5 ft, Fan RPM 245: 12.2 sones @ 0.000 in SP and 5 ft, 11.6 sones @ 0.125 in SP and 5 ft, 11.0 sones @ 0.250 in SP and 5 ft, 10.7 sones @ 0.375 in SP and 5 ft, Fan RPM 269: 14.3 sones @ 0.000 in SP and 5 ft, 13.8 sones @ 0.125 in SP and 5 ft, 13.2 sones @ 0.250 in SP and 5 ft, 12.7 sones @ 0.375 in SP and 5 ft, Fan RPM 308: 17.9 sones @ 0.000 in SP and 5 ft, 17.5 sones @ 0.125 in SP and 5 ft, 16.9 sones @ 0.250 in SP and 5 ft, 16.2 sones @ 0.375 in SP and 5 ft, 15.8 sones @ 0.500 in SP and 5 ft, 15.6 sones @ 0.625 in SP and 5 ft, Fan RPM 366: 23.0 sones @ 0.000 in SP and 5 ft, 22.0 sones @ 0.125 in SP and 5 ft, 21.0 sones @ 0.250 in SP and 5 ft, 21.0 sones @ 0.375 in SP and 5 ft, 20.0 sones @ 0.500 in SP and 5 ft, 19.8 sones @ 0.625 in SP and 5 ft, 19.5 sones @ 0.750 in SP and 5 ft, 19.4 sones @ 0.875 in SP and 5 ft, Fan RPM 419: 28.0 sones @ 0.000 in SP and 5 ft, 27.0 sones @ 0.125 in SP and 5 ft, 27.0 sones @ 0.250 in SP and 5 ft, 26.0 sones @ 0.375 in SP and 5 ft, 26.0 sones @ 0.500 in SP and 5 ft, 25.0 sones @ 0.625 in SP and 5 ft, 24.0 sones @ 0.750 in SP and 5 ft, 24.0 sones @ 0.875 in SP and 5 ft, 23.0 sones @ 1.000 in SP and 5 ft, Fan RPM 460: 32.0 sones @ 0.000 in SP and 5 ft, 32.0 sones @ 0.125 in SP and 5 ft, 32.0 sones @ 0.250 in SP and 5 ft, 32.0 sones @ 0.375 in SP and 5 ft, 32.0 sones @ 0.500 in SP and 5 ft, 31.0 sones @ 0.625 in SP and 5 ft, 30.0 sones @ 0.750 in SP and 5 ft, 29.0 sones @ 0.875 in SP and 5 ft, 28.0 sones @ 1.000 in SP and 5 ft, 27.0 sones @ 1.250 in SP and 5 ft
Maximum Static Pressure	1 1/4 in wc
Brake Horsepower	1 1/25 hp
Includes Motor	No
Minimum Motor Horsepower	1 hp
Safety Features	Birdscreen, Windband
Motor Location	Out of Airstream
Maximum Motor Horsepower	10 hp
Power Source	Electric Motor
Compatible Curb Manufacturer Part Number	1VN43, 2RB83, 2ZV87, 4YY76, 4YY77
Maximum Inlet Air Temperature	180 Degrees F

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Mounting Location Roof, Wheel Diameter 50 in, Base Diameter Not Applicable, Base Length 64 in, Base Width 64 in, Base Shape Square, Minimum Airflow 12,424 cfm, Maximum Airflow 37,068 cfm, Maximum Motor Horsepower 10 hp, Minimum Motor Horsepower 1 hp, Minimum Motor Speed 214 RPM, Maximum Motor Speed 460 RPM, Maximum Static Pressure 1 1/4 in wc, For High-Static Pressure Applications No

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Downblast Less Drive Package, 50 In

Mfr # 4YY12

Zoro # G1334663

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