102mm Inline Duct Fan, 129.7 CFM, Variable Speed

4 inch inline duct fan boosts ventilation fast to pull heat, humidity, and odors out of grow tents, hydroponic rooms, basements, and equipment spaces. The copper AC motor delivers strong airflow while staying quiet for everyday use. Use the included variable speed controller to fine-tune extraction and air circulation, then mount or hang the fan with vibration-damping accessories for a stable, low-rattle install.

• Delivers adjustable airflow with a manual variable speed controller for precise ventilation control.


• Reduces noise with an AC motor design rated about 45 dB (up to 50 dB), suited to work and living areas.


• Improves air exchange to help manage heat, moisture, smoke, and stale air in enclosed spaces.


• Includes anti-vibration rubber pads and straps to limit rattling and speed up installation.


• Fits standard 4 in (102 mm) ducting for grow tents, hydroponics, kitchens, basements, and AV/equipment rooms.

When airflow drops, temperatures rise and humidity lingers—this inline ventilation fan helps you stabilize the environment with controllable extraction and dependable static pressure. Set it up as an exhaust or booster fan, dial in the speed you need, and keep air moving without constant noise. Built for frequent use with a copper motor and secure mounting options, it’s a practical upgrade for any ducted ventilation setup. Grab yours today and tune your airflow to match the season and space.

• Duct size: 4 in / 102 mm


• Airflow: 220 m³/h (129.7 CFM) ±10%


• Air pressure: 165 Pa


• Fan speed: 2550 RPM ±10%


• Noise level: about 45 dB (up to 50 dB)


• Rated power: 31 W


• Motor type: copper AC motor


• Voltage / frequency: AC 220–240V, 50Hz


• Size (L×W×H): 12 × 9.3 × 7.5 in (304 × 235 × 190 mm)


• Weight: 4.2 lb / 1.9 kg