Dayton 4HZ57


Exhaust Vent, 18 1/2 In

4HZ57 159684
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ItemExhaust Ventilator
TypeCentrifugal Upblast Direct Drive
Wheel Dia. (In.)18-1/2
CFM @ 0.000-In. SP4307
CFM @ 0.125-In. SP4173
CFM @ 0.250-In. SP4045
CFM @ 0.375-In. SP3927
CFM @ 0.500-In. SP3822
CFM @ 0.625-In. SP3679
CFM @ 0.750-In. SP3470
CFM @ 0.875-In. SP3284
CFM @ 1.000-In. SP3072
CFM @ 1.250-In. SP2477
Sones @ 0.250-In. SP @ 5 Ft.16.5
Motor Voltage115/230
Max. Operating Amps11.4/5.7
Motor HP1
Max. BHP0.93
Base Width (In.)30
Base Length (In.)30
Base Height (In.)1-3/4
Overall Dia. (In.)35-3/8
Overall Height (In.)30-1/2
Shaft Dia. Wheel End (In.)1/2
Mounting LocationRoof
Max. Inlet Temp. (Deg. F)300
Housing MaterialSpun Aluminum
Wheel MaterialAluminum
Wheel TypeBackward Incline
Speed Controllable No
Agency ComplianceUL/cUL 705/762
RequiresRoof Curb For New Installation
Includes NEMA 1 Junction Box
Adj. 12 3/8"H Roof Curb Stock No.2ZV83
Adj. 6 3/8"H Roof Curb Stock No.4C454
Recommended 12 In. Fixed Curb Item No.4HX49
Recommended 8 In. Fixed Curb Item No.4HX41
Fixed UL 762 Kitchen Roof Curb Stock No.4HX57
Adj. UL 762 Kitchen Roof Curb Stock No.4HX62
Recommended Damper Size (In.)23 x 23
Recommended Damper Stock No.4HX67
Weight 96.000000


Exhaust Ventilator, Centrifugal Upblast Direct Drive, CFM @ 0.000-In SP 4307, @ 0.250-In SP 4045, @ 0.500-In SP 3822, @ 1.000-In SP 3072, 16.5 Sones @ 0.250-In SP, Roof Mounting Location, Base Width 30 In, Base Length 30 In, Max Inlet Temp 300 F, Motor Voltage 115/230, 1 Phase, Motor HP 1, 1140 RPM, Wheel Dia 18 1/2 In, Speed Controllable Except For Kitchen Applications, Requires Roof Curb For New Installation, Includes NEMA 1 Junction Box

  • Note: Speed controllers available for 115V units only. For kitchen application, check with local code authorities for minimum duct velocities. Do not use dampers in any kitchen application. NFPA 96.

Centrifugal Direct-Drive Upblast Exhaust Ventilators
  • Aluminum, backward-inclined wheel 1-piece rolled aluminum windband fully welded to base Motor, drive frame, and blower wheel are isolated from mounting base Motor compartment is isolated from contaminated air NEMA 1 junction box in motor enclosure (Hazardous units have NEMA 7 & 9 disconnect switch) UL and C-UL Listed (Motor only UL Listed for Class I Groups C & D, and Class II Groups F & G for hazardous location units)
  • 1-Speed
  • For contaminated air with inlet temps. below 300 F. UL 762 Listed Restaurant Exhaust Appliances (YZHW), except hazardous units.

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