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

Auto Ventilating Fan
Round Backside
RAV-200R
RAV-250R

Auto Ventilating Fan
Round Backside
RAF-200G
RAF-250G

Auto Ventilating Fan
Round Backside
RAF-201G
RAF-251G
RAF-301G

Shutter Vent. Fan
Square Backside
KS-20
KS-25

Shutter Vent. Fan
Square Backside
KS-30