TT Pro Range

Vents TT Pro Series: Powerful, semi-centrifugal fans for supply air and exhaust air


Compact devices for conveying air at high pressure volumes in seven nominal sizes: Ø 100 mm, Ø 125 mm, Ø 150 mm, Ø 160 mm, Ø 200 mm, Ø 250 mm, Ø 315 mm


If you need an inline fan that doesn't just move air, but keeps airflow strong even under pressure, the TT PRO mixed-flow (semi-radial) duct fans are built for exactly that. They combine the practical features of axial fans with the high-pressure capability you'd normally expect from centrifugal designs. That means you get a powerful, stable air stream through longer duct runs, bends, grilles or filters - while maintaining a low noise level that suits comfort-focused installations. With airflow performance up to 2050 m³/h and full compatibility with duct diameters from 100 to 315 mm, TT PRO covers everything from compact residential extraction to demanding commercial ventilation setups.


Options

TT Pro U: temperature-controlled operation, integral speed control

TT Pro T: adjustable timer 2 - 30 minutes

TT Pro V: integral speed control

These fans are a great match for high-humidity areas such as bathrooms and sanitary rooms, where reliable extraction helps reduce condensation, odours and mould risk. At the same time, they're equally suited for general supply or extract ventilation in flats, houses, shops and cafés. The mixed-flow design is the key advantage: it delivers higher pressure and better real-world airflow than conventional axial fans, especially when the system has resistance. So you can design more flexible duct routes without sacrificing performance - or turning the space into a noisy plant room.


Build quality and serviceability are clearly engineered with installers in mind. The TT PRO casing is made from durable, flame-retardant polypropylene, designed for long service life. The central module - motor, impeller and terminal box - is secured to the fan spigots with hose clamps. This modular concept makes maintenance refreshingly easy: you can remove the central unit quickly without dismantling the full fan housing or pulling the entire unit out of the duct line. For installations in ceilings, shafts or technical voids, that's a real time-saver.

Inside, airflow is carefully managed for efficiency and acoustic comfort. An inlet air collector supports smooth, even intake. The conical impeller and specially shaped blade profile increase the air's circular velocity - driving higher pressure and airflow compared to standard axial fans. The air funnel, engineered impeller and outlet guide vanes shape the flow so the fan achieves an excellent balance of high volume flow and high pressure with reduced noise. TT PRO models use two-speed single-phase motors with low power consumption, backed by thermal overload protection. The ball bearings support extended motor life, rated around 40,000 operating hours - and the motor protection class is IPX4.


Installation flexibility is another strong point. TT PRO fans can be fitted into the duct system at any point and at any angle. Multiple fans can be used in one system: install them in parallel to increase airflow, or in series to increase pressure - useful for long duct routes or high-resistance layouts. A flat mounting plate supports quick wall installation, and the terminal box can be positioned in any orientation for simpler wiring and access.

For smarter operation, the TT PRO range also offers control options. Units with Option U include an electronic controller for temperature and speed regulation, making them ideal for temperature-managed environments like greenhouses. Set a target temperature and a minimum speed: when the sensed air temperature rises above the set point, the fan automatically switches to high speed, then returns to the preset lower speed once the temperature drops - complete with an anti-hunting delay function for stable operation. Additional options include T (run-on timer, 2–30 min) and V (three-position speed switch), giving you the flexibility to match control to each project.