- (1) CLOUDLINE T4 Inline Duct Fan
- (1) Smart Controller
- (1) Corded Thermal Probe
- (2) Duct Clamps
- Mounting Hardware
- User Manual
AC Infinity Cloudline T4 Inline Fan System w/ Smart Controller - 4" Duct
- 205 CFM airflow capacity for 4-inch ducting systems
- Mixed-flow design maintains high pressure while running at a quiet 28 dBA
- IP44 rated housing resists dust and moisture in high humidity grow environments
- 2-year warranty, does not cover non-durable goods or consumables
- View More Details
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are automating your climate controls because manual speed adjustments lead to inconsistent humidity levels.
- You are switching to a silent fan because the loud hum of standard blowers makes working in your tent a headache.
What We Found
- We like that the motor unit pops out without taking down the ducting, which makes cleaning sticky blades much faster.
- The auto-ramping on this controller is much smoother than on-off switches that cause sudden humidity drops.
What Users Say
- Users who switched to the T4 say they stopped checking their climate apps every hour once the triggers were set up.
- Customers who clean their gear between harvests say the detachable motor saves them from re-taping ducting every time.
AC Infinity Cloudline T4 Inline Fan System w/ Smart Controller - 4" Duct
Struggling to maintain the perfect climate in your grow tent? The AC Infinity Cloudline T4 is an intelligent ventilation system designed to automate your environment. It quietly and efficiently manages temperature and humidity, creating optimal conditions for healthy plant growth.
Engineered with a mixed-flow design, this fan delivers a powerful 205 CFM airflow even in high static pressure environments, perfect for pulling fresh air in or exhausting stale, odorous air out. The included smart controller is the brain of the operation, featuring an intelligent probe that monitors temperature and humidity. It automatically adjusts fan speeds to respond to environmental changes, giving you precise, hands-free control. Expand your setup by connecting up to four UIS devices to a central hub like the Smart Controller 69 Pro+, creating a fully integrated ecosystem.
What's Included
Features



Whisper-Quiet Operation
EC motor with PWM control and a mixed-flow design minimizes noise to just 28 dBA.
Smart Climate Control
Automates fan speed based on real-time temperature and humidity readings for a stable environment.
Built to Last
Features an IP44 rated housing, protecting components from dust and liquids for long-term reliability.
Simple Upkeep
The fan motor, impeller, and blades are easily detachable for hassle-free cleaning and maintenance.
Specifications
| Specification | Value |
|---|---|
| Duct Size | 4 inches |
| Total Dimensions (Fan) | 7.40 x 11.93 x 6.93 in. |
| Total Dimensions (Controller) | 5.19 x 2.91 x 1.06 in. |
| Cord Length to Controller | 20 feet |
| Sensor Probe Length | 12 feet |
| Total Airflow | 205 CFM |
| Total Noise | 28 dBA |
| Max Speed | 2800 RPM |
| Static Pressure | 223 Pa |
| Max Power Draw | 28 W |
| Average Power Usage | 21 W |
| Voltage | 100-240V AC |
| Operating Humidity | 35 to 85% RH |
| Operating Temperature | 32 to 140°F |
| Ingress Protection | IP 44 |
| Fan Bearings | Dual Ball |
| L10 Life Expectancy | 67,000 Hours |
Support & Manuals
Warranty
This AC Infinity product comes with a two-year warranty. Please note this does not cover non-durable goods or consumables. All sales are final.
FAQs
It's designed for quiet operation, producing only 28 dBA at its highest setting, which is comparable to a soft whisper.
This model includes the standard smart controller. For full app control via Bluetooth or Wi-Fi, you would need to upgrade to a controller like the Smart Controller 69 Pro.
The mixed-flow design combines features of axial and centrifugal fans, allowing it to maintain strong airflow (205 CFM) even when pushing air through long ducting or a carbon filter where static pressure is high. This ensures your ventilation is always effective.
The kit is quite comprehensive. You will need 4" ducting to connect it to your intake or exhaust ports. We recommend the AC Infinity Flexible Four-Layer Ducting for a perfect fit and durability.
For a comprehensive overview, check out our guide on AC Infinity grow tents and air filter kits, which covers ventilation principles and setup tips in detail.
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.