AC Infinity Clip On Fans

Why growers run a clip fan

Your inline fan moves air out of the tent; a clip fan moves it around inside. That internal movement is what strengthens stems, breaks up the humid pocket that sits on the canopy after lights-on, and keeps leaf surfaces dry enough to stay ahead of mould. Cloudray is AC Infinity’s clip fan line, and all three models share the same motor platform.

One motor platform, three sizes

The S4, S6 and S9 all use a brushless EC motor with carbon steel gears and dual ball bearings, and all three mount horizontally or vertically. Each draws 11W, runs from a 2.4m cord and is rated for 67,000 hours. Only the impeller changes across the range — so the choice is about how much air you need moved, not about build quality.

Ten speeds, ten wind modes, ten oscillation levels

Every Cloudray gives you three separate dials of control. Ten digital speeds set the strength. Ten dynamic wind modes vary that strength over time, so the airflow rises and falls the way outdoor wind does instead of blasting one spot indefinitely. Ten oscillation levels set how wide the head sweeps inside its 90° rotation range, so you can aim at a single problem corner or cover the whole canopy. The head tilts through 55°, and the LED speed display dims once set so it doesn’t break a dark cycle.

Built for a humid tent

Grow rooms are hard on fans. The S4 and S6 are IP54-rated and the S9 is IP44, so condensation and high humidity don’t cut their life short, and all three are ETL certified (#5027708).

The Cloudray range at Grow Kings

• Cloudray S4 — 100mm | 4 inch, 204 CFM, 29 dBA, IP54. The compact one. A high static pressure design (23 Pa) pushes air further than its size suggests, which is what you want in a propagation tent or a corner a bigger fan won’t fit.
• Cloudray S6 Gen 2 — 150mm | 6 inch, 325 CFM, 31 dBA, IP54. The all-rounder for a 1.2x1.2m tent, with a compact vise-grip metal clamp that takes up less pole than the older design.
• Cloudray S9 Gen 2 — 229mm | 9 inch, 405 CFM, 35 dBA, IP44. The largest, with a bigger motor rebuilt specifically to extend oscillation life under continuous use.

How to choose your Cloudray clip fan

1. Size it to the tent. The S4 suits propagation tents and tight spots, the S6 a typical 1.2x1.2m, and the S9 anything larger or any tent where the canopy has filled out.
2. Count fans, not just size. Two smaller fans at different heights usually beat one large one — one below the canopy moving air through the stems, one above it pointed across the light rather than down at the plants.
3. Decide whether you want app control. Every Cloudray runs standalone on its own controls. Plugging one into a UIS controller adds WiFi app control, climate triggers and schedules — worth it if you already run a Controller 69 PRO.
4. Leave room for the arc. The head sweeps within 90° and tilts 55°. Mount it where that arc clears your plants, your light and your ducting.

A clip fan is one part of the climate picture. Pair it with an AC Infinity inline duct fan and a matched AC Infinity carbon filter for extraction and odour — the Cloudray handles everything happening inside the tent.