HOME >PRODUCTS> PVF > Automatic Ventilating Fan
 
 
Expressaire Fan
Square Backside
REF201
REF251
REF301

 

 
Not in use
(the blades are completely closed)
  Turned on   In motion
※ The fan has its safety grill removed to demonstrate its motion.

- Shutters break often.
- Shutters reduce ventilation.
- Shutters get rusty.
- When the electric power is off, conventional shutters stay open, letting dust and insects enter freely.
- When running, regular shutter fans spread dust into the air and accumulate dust particles behind the shutters.
- On ordinary fans, closing the shutter after running just creates more dust.

- No need for additional shutters.
- Shutter maintains good ventilation.
- Even if electric power is off, the blades close automatically with no need for manual control.
- Simple to operate: When turned on, the shutter opens to become the blades of the fan. When off,
   they automatically form a closed shutter. - It is easy to connect the unit to thermostats, gas detectors, etc.
- The blades close completely, forming a shield against insects and unwelcome odors.

 


 

 

- Living room, bathroom, office, restarant, office, library, smoking room, workshops,etc.

 

 

 

Model A B C D E
REF201

313

270 140 35 105
REF251

340

312 127 27 100
REF301

313

270 140 30 110

 

 

 

Model Impeller Size
(mm)
Phase.Volt
(∮/V/Hz)
Current
(A)
Poles
(P)

Input

(W)

Air Volume
(㎥/h)
Noise
(dB)
Weight
(Kg)
REF201 Ø200 1/220/50 0.200 4 31.0 700 39 2.09
1/220/60 0.183 29.0 700
REF251 Ø250 1/220/50 0.130 29.0 800 41 2.45
1/220/60 0.137 30.0 800
REF301 Ø300 1/220/50 0.159 34.0 900 43 2.98
1/220/60 0.187 38.8 900