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Downblast Vent, Direct Drive, 18-1/2 In

Mfr # 4YC77
Zoro # G1110121

$1,475.99

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Key Features

Drive Package With Motor Included Yes
Duty Rating - Roof Ventilators Standard
Drive Type - Roof Ventilators Direct Drive
Mounting Location - Roof Ventilators Roof
Number of Speeds 1

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Product Information

Brand Dayton
MFR # 4YC77
Zoro # G1110121
UPC #
190735337752
Country of Origin United States
Category Direct Drive Centrifugal Exhaust Ventilators

Dimensions

Base Size - Roof Ventilators	30 in x 30 in
Base Square Size - Roof Ventilators	30" x 30"
Overall Dia.	35 1/2 in
Base Length	30 in
Base Width	30 in
Base Height	1 3/4 in
Dimension C	28 in
Shaft Dia. Wheel End	1/2 in
Dimension D	5 1/2 in
Dimension A	30 in
Wheel Dia.	18 1/2 in
Dimension B	35 1/2 in
Overall Height	29 3/4 in
Overall Width	35 1/2 in
Overall Length	35 1/2 in
Housing Length	35.5 in
Damper Size	23 x 23 in
Overall Diameter	35 1/2 in
Base Dimension	30 in Square
Wheel Diameter	18 in
Cutout Size	25.5 in L x 25.5 in W
Propeller Shaft Diameter	1/2 in
Cutout Length	25.5 in
Housing Width	35.5 in

Details

Item - Roof Ventilators	Downblast Ventilator
Drive Package With Motor Included	Yes
Duty Rating - Roof Ventilators	Standard
Drive Type - Roof Ventilators	Direct Drive
Mounting Location - Roof Ventilators	Roof
Number of Speeds	1
Voltage - Roof Ventilators	115V AC/230V AC
Motor HP - Roof Ventilators	3/4 hp
CFM @ 0.000-In. SP	4433
Recommended 8 In. Fixed Curb Item No.	4HX41
Item	Centrifugal Downblast Roof Exhaust Fan
Adj. 12 3/8"H Roof Curb Stock No.	2ZV83
RPM	1140
Includes	NEMA 1 Junction Box
CFM @ 1.250-In. SP	2856
Drive Package Included	Yes
Hz	60
Adj. 6 3/8"H Roof Curb Stock No.	4c454
Drive Type	Direct Drive
CFM @ 1.000-In. SP	3328
Motor HP	3/4
Housing Material	Aluminum
CFM @ 0.875-In. SP	3515
Mounting Location	Roof
Max. Inlet Temp.	130 Degrees
Agency Compliance	AMCA Sound & Air, CSA Certified Motor, UL/cUL 705
Assembled/Unassembled	Assembled
CFM @ 0.625-In. SP	3837
Max. Operating Amps	8/4
Wheel Material	Aluminum
Max. BHP	0.98
Phase	1
CFM @ 0.375-In. SP	4102
CFM @ 0.500-In. SP	3980
Recommended 12 In. Fixed Curb Item No.	2RB79
Motor Voltage	115/230
CFM @ 0.125-In. SP	4329
Sones @ 0.250-In. SP @ 5 Ft.	16.8
Speed Controllable	Variable Speed
Sones @ 0.125-In. SP @ 5 Ft.	17.4
CFM @ 0.750-In. SP	3684
CFM @ 0.250-In. SP	4216
Wheel Type	Backward Inclined
Standards	AMCA Sound and Air, CSA, UL/cUL 705
Application	Industrial and Commercial Applications
Features	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
Material	Aluminum Blade with Aluminum Housing
For Air Type	Clean Air
Airflow @ 0.000 in SP	4,433 cfm
High-Efficiency Motor	No
Includes Drive Package	Yes
Maximum Fan Speed	1,140 RPM
Exhaust Airflow @ 0.000 in SP - Range	2,000 to 4,999 cfm
Frequency	60 Hz
Brake Horsepower	49/50 hp
Mount Type	Roof Curb
Exhaust Airflow @ 0.250 in SP	4,216 cfm
Exhaust Airflow @ 0.500 in SP - Range	2,000 to 4,999 cfm
Includes Motor	Yes
Spark Resistant Construction Type	A
Motor Location	Out of Airstream
Motor Enclosure Design	Open Air-Over (OAO)
Exhaust Airflow @ 0.000 in SP	4,433 cfm
Motor Speed	1,140 RPM
Maximum Static Pressure	1 1/4 in wc
Compatible Curb Manufacturer Part Number	2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
Compatible Speed Control	48C173
Maximum Inlet Air Temperature	130 Degrees F
Safety Features	Birdscreen, Windband
Housing Material Fabrication	Spun
Nominal Voltage	115/230V AC
Motor Efficiency	Standard-Efficiency Motors
Assembly	Assembled
Motor Horsepower	3/4 hp
Exhaust Airflow @ 0.375 in SP	4,102 cfm
Electrical Connection	Power Cord
Motor Enclosure	Open Air Over
Sound Level	13.6 sones @ 1.250 in SP and 5 ft, 14.3 sones @ 1.000 in SP and 5 ft, 14.6 sones @ 0.875 in SP and 5 ft, 15.1 sones @ 0.750 in SP and 5 ft, 15.6 sones @ 0.625 in SP and 5 ft, 16.0 sones @ 0.500 in SP and 5 ft, 16.4 sones @ 0.375 in SP and 5 ft, 16.8 sones @ 0.250 in SP and 5 ft, 17.4 sones @ 0.125 in SP and 5 ft, 17.9 sones @ 0.000 in SP and 5 ft
Maximum Ambient Temperature	130 Degrees F
Nameplate Voltage	115/230V AC
Current	8.0/4.0 A
Airflow @ 0.000 in SP - Range	2,000 to 4,999 cfm
Exhaust Airflow @ 0.125 in SP	4,329 cfm
Base Shape	Square
Exhaust Airflow @ 0.500 in SP	3,980 cfm
For High-Static Pressure Applications	No
Mounting Orientation	Vertical

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Direct Drive, Assembly Assembled, Wheel Diameter 18 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Nameplate Voltage 115/230V AC, Phase 1, Motor Horsepower 3/4 hp, Exhaust Airflow @ 0.000 in SP 4,433 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, Maximum Static Pressure 1 1/4 in wc

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Downblast Vent, Direct Drive, 18-1/2 In

Mfr # 4YC77

Zoro # G1110121

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