PrioSilentCircular Inline Duct Fans

Mixed-flow fan with integrated silencer

  • Unique patented combination of silencer and fan casing

  • Option to change air direction in casing

  • Available with AC and EC motors for 50 and 60Hz

  • Sound and energy optimized impellers

  • Very low weight

  • Easy to clean


The prio silent XP fans are intended to use for supply or extract air and are designed to be installed in any position. This ensures that the fans can be used in a variety of commercial and domestic applications.


The hybrid silencer/casing has a very good resistance against most chemicals and oils. The hydrophobic surface of the casing is easy to clean and allows using the fan in wet conditions.


The sound optimized impellers together with high efficient external rotor motors are designed to ensure high-level performance to minimize power consumption and maximize efficiency.


Prio silent XP can be selected together with variety types of accessories as fast clamps, heaters, filters, dampers, etc.


Hybrid silencer/casing manufactured from EPP and special composite material, is fully air tight class C according to EN12237.

Fans are equipped with an external terminal box with protection class IP55.


Prio silent XP have aerodynamically optimized impellers and guide vanes. These are from lightweight, hard-wearing fiberglass reinforced polyamide, dynamically balanced and paired with corresponding external rotor motors.


Depending on the type, prio silent XP fans are equipped with AC or EC external rotor motor. Motors are suitable for 50Hz and 60Hz.

Motor protection

Fans with AC motors have an integrated thermal protection with manual (electrical) reset.

Fans with EC motors have an integrated electronic thermal protection including locked-rotor protection and soft-start.


EC motors with built-in potentiometer to adjust working point can be also controlled by external signal 0-10V.

AC motors can be controlled by 5-step or stepless speed regulator.


Prio silent XP can be installed in any position by using metal rail with holes. Spigot with 25 mm length is perfectly designed to connect circular duct by using fast clamps preventing vibration to the duct.