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Galvanized steel frame commercial exhaust fan with aluminum blades 20 in diameter

Dayton

Dayton 20 in Commercial Direct Drive Exhaust Fan 115/230V 495 cfm 18 sones

SKU CH-5M70-FNAT5

Moves 495 cfm of air at 18 sones through a 20 in aluminum blade driven by a 115/230 V direct-drive motor

  • typeCommercial Direct Drive
  • Moves 495 cfm of air for strong exhaust performance
  • Direct-drive motor cuts maintenance with fewer moving parts
  • Dual-voltage 115/230V design fits multiple wiring setups
  • Quiet 18-sone rating suits noise-sensitive areas
  • Galvanised steel frame resists corrosion in damp conditions

Dayton 20 in Direct Drive Exhaust Fan

The Dayton 20 in commercial direct drive exhaust fan moves 495 cfm at 0.000 in SP through a 20 1/2 in duct connection. An aluminum blade and galvanized steel frame handle continuous airflow in workshops, warehouses and similar spaces. Dual 115/230V wiring allows installation on either circuit without a transformer.

Suited for ducted exhaust where a direct drive

Buyers who need a dehumidistat, a guard or belt drive operation should look at other models. The unit is restricted from sale in California because it contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm under Proposition 65.

Noise level 18 sones

At 18 sones the fan produces a noticeable but moderate sound that fits most industrial and commercial environments. Quieter areas such as offices or bedrooms will require a lower sone rating.

Highlights

  • Moves 495 cfm of air for strong exhaust performance
  • Direct-drive motor cuts maintenance with fewer moving parts
  • Dual-voltage 115/230V design fits multiple wiring setups
  • Quiet 18-sone rating suits noise-sensitive areas
  • Galvanised steel frame resists corrosion in damp conditions

Specifications

BrandDayton
typeCommercial Direct Drive

Questions about this item

What size ceiling opening does the 20 in blade diameter fan require?

The duct diameter is 20 1/2 in, so the ceiling opening must accommodate at least that width for the direct drive exhaust fan to fit.

How do I wire the 115/230V motor during installation, and what step is often missed?

Select the correct voltage tap on the motor before mounting; many installers forget to verify the supply matches the chosen 115 or 230 V setting.

When should the aluminum blades be cleaned or replaced to maintain 495 cfm airflow?

Inspect the aluminum blades annually; clean dust buildup that reduces the 495 cfm rating, and replace blades if they show corrosion or imbalance.

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