AC Infinity Inline Fans

Cloudline PRO — quiet ventilation, sized to your duct

Cloudline PRO inline duct fans are the exhaust backbone of an AC Infinity setup: quiet mixed-flow fans available in every common duct size — 100mm | 4 inch (S4, T4), 150mm | 6 inch (S6, T6), 200mm | 8 inch (S8, T8), 250mm | 10 inch (T10) and 300mm | 12 inch (T12).

S-series or T-series?

Both share the same fan platform. S-series fans ship with a 10-speed manual controller — set the speed and let it run. T-series fans include the Controller 69 PRO, which adds temperature and humidity triggers, scheduling, cycles and app monitoring, and can grow into running your whole tent's UIS gear.

Built for quiet running

The quietest exhaust is a fan that isn't working hard: size up rather than down, run it at moderate speed, and add AC Infinity's duct silencer and noise-reduction clamps from the wider range if the room demands near-silence.

How to choose your Cloudline

1. Match the duct size — small tents around 60x60cm typically run 100mm, 90x90 to 120x120cm tents 150mm, and larger rooms 200mm and up.
2. Pick your control — set-and-forget ventilation suits an S-series; climate automation and VPD-driven control want a T-series.
3. Complete the exhaust — pair the fan with a same-diameter AC Infinity carbon filter and quality ducting; mismatched diameters cost airflow.
4. Or grab the kit — the T-series Air Filtration Kits bundle fan, Controller 69 PRO, matched carbon filter and ducting in one box.