VIVOSUN D4 4-Inch Inline Duct Ventilation Fan – 195 CFM, Quiet 30 dB, Safe HVAC Blower for Grow Tents

Overview

Meet the VIVOSUN D4 4-Inch Inline Duct Ventilation Fan, a compact yet capable blower designed to move air efficiently in tighter spaces. With a top speed around 2500 RPM, it delivers up to 195 CFM through standard ducting, making it suitable for grow tents, attics, basements, and kitchens that benefit from steady air exchange. This unit is built to support practical needs like reducing heat buildup, managing humidity, and promoting fresh air flow in real-world setups.

Performance with Quiet Operation

Thanks to a smart flow deflector, the air stream is concentrated to minimize turbulence and noise. In practice, the D4 can run at a low sound level, helping keep your workspace or living area comfortable while the fan works in the background.

• High airflow: 195 CFM for reliable air exchange
• Quieter operation: flow deflector helps reduce noise

Safety and Reliability

The motor is ETL listed and includes an automatic reset to prevent overheating, while the junction box uses flame-retardant components for fire safety. These design choices aim to offer dependable performance in everyday environments.

• ETL-listed motor with automatic reset
• Flame-retardant junction box for added safety

Easy Hookup and Maintenance

Setup is straightforward: flanges on both intake and exhaust ends lock securely to duct hoses using simple tabs, and a 5.9-foot cord keeps wiring within reach. The housing, impeller, and blades are designed to be detached for cleaning and routine upkeep, helping maintain efficiency over time.

• Locking end flanges for quick assembly
• 5.9-foot power cord for flexible placement
• Detachable housing and blades for easy cleaning

Versatile Applications

Whether you’re ventilating a grow room, improving airflow in a basement, or supporting kitchen venting, the D4 offers a flexible solution for enhancing air movement and temperature control in a variety of spaces.

Overall, the VIVOSUN D4 combines robust airflow with thoughtful design to support practical ventilation goals. It presents a feasible option for users seeking scalable airflow without heavy installation, offering possibilities rather than guarantees for improved air circulation in your space.