VIVOSUN 4-inch Inline Exhaust Fan P4 130 CFM — Stepless Speed Control, Quiet Energy-Efficient EC Motor

The VIVOSUN P4 4" Inline Fan is a compact, 130 CFM exhaust fan with stepless speed control designed to deliver quiet, energy-efficient ventilation for grow tents, rooms, and duct systems.

If you need reliable ventilation in a tight space, the VIVOSUN P4 combines a high-efficiency EC motor, low operating noise, and a versatile mounting design. This inline fan is built to move up to 130 cubic feet per minute while consuming less power and offering stall protection and a wide-voltage adapter for safer operation. It's suitable for horticultural setups, small workshops, bathrooms, attics, and any application where compact, controllable airflow matters.

How much air can this 4" inline fan move and where is it best used?

The P4 delivers up to 130 CFM, making it well-suited to small to medium enclosures and localized exhaust needs. It attaches easily to standard 4-inch ducting and can be mounted inline, on walls, or on ceilings for flexible placement.

• Peak airflow: 130 CFM for efficient air exchange in confined spaces
• Ideal for: grow tents, small greenhouses, bathrooms, basements, and workshops
• Duct compatibility: fits standard 4" duct systems for inline installation
• Mounting options: wall, ceiling, or inline mounting for adaptable setups

How energy-efficient and quiet is the fan in everyday use?

The fan uses an upgraded EC (electronically commutated) motor that balances airflow and electrical consumption. At typical operating speeds it runs as low as 26 dB(A), keeping noise to a minimum for living spaces or grow rooms.

• EC motor: lower power draw and extended service life
• Low noise: rated around 26 dB(A) for undisturbed environments
• Reduced maintenance: durable construction for fewer replacements
• Stall protection: helps prevent motor damage and safety issues

How do I control the airflow and install the fan safely?

A stepless speed regulator gives precise control over airflow so you can dial in ventilation to match temperature and humidity needs. The fan ships with a wide-range power adapter and safety features that simplify wiring and lower operational risk.

• Speed control: stepless regulator for fine adjustments
• Power supply: wide-voltage adapter for versatile electrical setups
• Safety features: low-voltage protection and stall prevention
• Materials: ABS housing and PBT blades resist deformation

What are the build quality and durability considerations?

VIVOSUN engineered the P4 with robust materials and design choices to withstand regular use. The fan's ABS outer shell and PBT blades maintain balance and shape under continued operation, while the EC motor extends service intervals.

• Housing: durable ABS plastic for impact resistance
• Impeller: PBT blades for stable performance and longevity
• Maintenance: designed for low upkeep and long service life
• Protection: stall protection reduces risk of motor failure

Who is this for: The VIVOSUN P4 4" Inline Fan suits hobby growers, small-scale cultivators, and homeowners who need compact, controllable ventilation. It works well for anyone upgrading a small duct system, improving air exchange in a grow tent, or adding quiet exhaust to bathrooms, basements, and workshops. If you want efficient airflow with simple speed adjustment and low noise, the P4 is designed to be a reliable, space-saving option.