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VENTS 100 Casto One L

Low-noise and energу-saving axial fan for exhaust ventilation with air capacity up to 95 m³/h suitable for use in Zone 1

  • Description
  • Characteristics
  • Downloads
  • Modifications
  • Dimensions
  • Designation key
  • Continuous or periodic exhaust ventilation of bathroom, showers, kitchens and other utility spaces.
  • Ventilation of premises with high noise level limitations.
  • Mounting into ventilation shafts or connection to Ø100 mm air ducts.
  • Additional rubber seal realized by two-component molding allows the fans to be used in Zone 1.


  • The casing and the impeller are made of high-quality durable ABS plastic, UV resistant.
  • Advanced 7-blade impeller aerodynamic profile provides even better performance and lower noise level.

  • The fan is equipped with a back valve to prevent back flow and heat losses during the fan standby.
  • The fan exhaust spigot incorporates specially designed air rectifiers to reduce air turbulence, increase air pressure and lower noise level.
  • Low energy demand from 8 W due to new high-efficient motor.
  • Designed for continuous operation and requires no maintenance.
  • Motor equipped with overheating protection.

Manual control:

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


  • By the electronic control unit BU-1-60. The control unit is supplied separately.
  • By the timer T (the built-in run-out timer enables the fan operation within 2 to 30 minutes after the fan switching off).
  • By the humidity sensor and timer TH (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.
  • Flexible duct application is recommended in case of remote location of the ventilation shaft.
  • The air duct is connected to the fan exhaust flange through a clamp.
  • Fixed to wall by self-tapping screws.
  • Suitable for ceiling mounting.
Parameter VENTS 100 Casto One L
VENTS 100 Casto One T L
VENTS 100 Casto One T1 L
VENTS 100 Casto One TH L
VENTS 100 Casto One V L
Measurement unit
Voltage 220-240 220-240 220-240 220-240 220-240 V
Frequency 50 50 50 50 50 Hz
Power consumption 8 8 8 8 8 W
Air capacity 95 95 95 95 95 m³/h
Current 0.05 0.05 0.05 0.05 0.05 A
Sound pressure level at 3 m 27 27 27 27 27 dBА
Spigot size 100 100 100 100 100 mm
Weight 0.45 0.45 0.45 0.45 0.45 kg
Design axial axial axial axial axial -
IP Code IP 44 Zone 1 IP 44 Zone 1 IP 44 Zone 1 IP 44 Zone 1 IP 44 Zone 1 -
Type exhaust exhaust exhaust exhaust exhaust -
Mounting wall mounting, ceiling mounting wall mounting, ceiling mounting wall mounting, ceiling mounting wall mounting, ceiling mounting wall mounting -
Files archieve
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  • Technical documentation
"VENTS Casto, VENTS Casto One" user’s manual 07-2023 (V215EN-02) (pdf 2.02Mb)
"VENTS Casto One" product description 07-2023 (pdf 2.73Mb)
Download high quality image "VENTS Casto One" (psd 1.74Mb)
Download image "VENTS Casto One" for your website (png 395.37Kb)
Modification name Humidity sensor Pull-cord switch Ball bearing motor Turn-off delay timer Turn-on delay timer
VENTS 100 Casto One L - - - -
VENTS 100 Casto One T L - - -
VENTS 100 Casto One T1 L - -
VENTS 100 Casto One TH L - -
VENTS 100 Casto One V L - - -
VENTS 100 Casto One L
Parameter Value Measurement unit
Ø D 99 mm
B 150 mm
L 79 mm
L1 19 mm
Designation key
Designation key
Casto One 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.
Casto One T Off-delay timer modification with operating time from 2 to 30 min.
Casto One T1 Modification with turn-on delay timer (adjustable from 0 to 2 minutes) and off-delay timer (adjustable from 2 to 30 minutes).
Casto One TH Off-delay timer modification with the operating time from 2 to 30 min and humidity sensor with threshold from 60 to 90%.
Casto One V Pull-cord switch modification.
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