Dayton 4YC67


Roof Vent, 3 Spd, 115V, CFM 717/888/1059

4YC67 49848
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ItemExhaust Ventilator
TypeCentrifugal, Direct Drive Downblast, 3 Speed
Wheel Dia. (In.)10-1/2
CFM @ 0.000-In. SP717/888/1059
CFM @ 0.125-In. SP570/780/969
CFM @ 0.250-In. SP389/640/863
CFM @ 0.375-In. SP-/493/745
CFM @ 0.500-In. SP-/184/623
CFM @ 0.625-In. SP-/-/474
Sones @ 0.125-In. SP @ 5 Ft.9.3/6.7/4.5
Sones @ 0.250-In. SP @ 5 Ft.4.5/6.4/8.8
Motor Voltage115
Max. Operating Amps1.5/2/2.7
Motor HP1/8
Max. BHP0.12
Base Width (In.)19
Base Length (In.)19
Base Height (In.)1-3/4
Overall Dia. (In.)21-3/4
Overall Height (In.)15-3/8
Shaft Dia. Wheel End (In.)1/2
Mounting LocationRoof
Max. Inlet Temp. (Deg. F)130
Housing MaterialSpun Aluminum
Wheel MaterialAluminum
Wheel TypeBackward Incline
Speed Control1DGV1
Speed ControllableYes
Agency ComplianceUL/cUL 705
RequiresRoof Curb For New Installations
Includes NEMA 1 Junction Box
Adj. 12 3/8"H Roof Curb Stock No.2ZV82
Adj. 6 3/8"H Roof Curb Stock No.4C453
Recommended 12 In. Fixed Curb Item No.2RB75
Recommended 8 In. Fixed Curb Item No.4HX38
Recommended Damper Size (In.)12 x 12
Recommended Damper Stock No.4HX64
Weight 26.000000


Exhaust Ventilator, Centrifugal, Direct Drive Downblast, 3 Speed, Wheel Dia 10 1/2 In, CFM @ 0.000-In SP 717/888/1059, @ 0.250-In SP 389/640/863, 4.5/6.4/8.8 Sones @ 0.250-In SP, Motor Voltage 115, 1 Phase, Motor 1/8 HP, Base Width 19 In, Base Length 19 In, Roof Mounting Location, Max Inlet Temp 130 Deg F, Housing Material Spun Aluminum, Speed Controllable, Includes NEMA 1 Junction Box

  • Note: 8" models cannot be used with dampers or shutters.

Centrifugal Direct-Drive Downblast Exhaust Ventilators
  • 3-Speed
  • Ventilators feature 3 specific RPM motors and are fully controllable on any selected speed. Speed control allows for 30% useable turndown.
  • For use in general clean air environments Aluminum backward-inclined, nonoverloading centrifugal wheel design Fully rolled windband bead for increased stability Motor compartment is isolated from the air stream and is cooled by outside air NEMA 1 junction box located in motor enclosure Max. inlet air temp.: 130 F UL-705 Listed for Power Ventilators

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