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VENTS 125 Simple

Axial fan for exhaust ventilation with air capacity up to 180 m³/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Designation key
  • Continuous or periodic exhaust ventilation of bathroom, showers, kitchens and other utility spaces.
  • Ventilation shaft mounting or duct connection.
  • Low to medium air flow motion for short distances at low air resistance.
  • Compatible with Ø 100, 120, 125 and 150 mm air ducts.
  • Modern design and aesthetic look.
  • The casing and the impeller are made of high-quality durable ABS plastic, UV resistant.
  • The intellectual impeller design makes the fan efficiency high and the service life long.
  • Insect screen.
  • Protection rating IP34.
  • Reliable and low-watt electric motor.
  • Designed for continuous operation and requires no maintenance.
  • Equipped with overheating protection.


  • The fan is controlled by a room light switch. It is not included in the delivery set.
  • The fan is controlled by the built-in V pull cord switch. Not applied in case of ceiling mounting.
  • Speed control is possible through a thyristor speed controller (see Electrical Accessories). Several fans may be connected to the same controller. Speed controllers can not be connected to the fans with the T, TH, TP, VT, VTH modifications.


  • By the BU-1-60 electronic control unit. The control unit is supplied separately.
  • By the T timer (the built-in turn-off delay timer enables the fan operation within 2 to 30 minutes after the fan switching off).
  • By the humidity sensor and the TH timer (if the humidity level in the room exceeds the sensor threshold adjustable value within 60-90 %, the fan switches automatically on and operates until the humidity level drops to the standard level, after that the fan continues operating within the time period according to the timer setting, then shuts down).
  • The fan is mounted directly into the ventilation shaft.
  • In case of remote location of the ventilation shaft flexible air ducts may be used. The air duct is connected to the fan exhaust flange through a clamp.
  • Fixed to the wall by means of screws.
  • Can be ceiling mounted in case the fan is ordered with ball bearings (Simple L modification).
Parameter VENTS 125 Simple
50 Hz
VENTS 125 Simple
60 Hz
Measurement unit
Voltage 220-240 220 V
Frequency 50 60 Hz
Power consumption 16 16 W
Air capacity 180 180 m³/h
Maximum air capacity 50 50 l/s
Specific power 0.32 0.32 W/l/s
Current 0.1 0.1 A
Sound pressure level at 3 m 35 35 dBА
Spigot size 125 125 mm
Weight 0.74 0.74 kg
Design axial axial -
IP Code IP 34 IP 34 -
Type exhaust exhaust -
Mounting wall mounting, ceiling mounting wall mounting, ceiling mounting -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
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  • Technical documentation
"VENTS Simple" product description 02-2020 (pdf 3.33Mb)
"VENTS Simple" user's manual 09-2021 (V171EN-03) (pdf 1.55Mb)
Download high quality image "VENTS Simple" (psd 2.43Mb)
Download image "VENTS Simple" for your website (png 637.76Kb)
VENTS 125 Simple
Parameter Value Measurement unit
Ø D 125 mm
B 175 mm
L 101 mm
L1 15 mm
Designation key
Designation key
Simple K Fan is equipped with a backdraft damper for back flow preventing.
Simple L The motor is equipped with ball bearings for long service life (appr. 40 thousand hours) and fan mounting at any angle. The bearings are maintenance-free and contain enough grease for the entire operating period.
Simple turbo High-powered motor.
Simple T Equipped with a regulated timer with the operating time from 2 to 30 minutes.
Simple TH Equipped with a timer with the operating time from 2 to 30 minutes and a humidity sensor with the threshold value from 60 to 90 %.
Simple V Equipped with a pull cord switch.
Simple VT Equipped with a pull cord switch and a regulated timer with the operating time adjustable from 2 to 30 minutes.
Simple VTH Equipped with a pull cord switch, regulated timer with the operating time adjustable from 2 to 30 minutes and a humidity sensor with the operating threshold range from 60 to 90 %.
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