The Complete "Mushroom" Ventilation Unit

The Freestanding Roof Ventilator, often recognized by its distinctive "mushroom" shape, is a self-contained exhaust solution that requires no additional curbs or complex foundations. Its design centers on independence and structural integrity, featuring a one-piece fiberglass or galvanized steel base that integrates seamlessly with your roof. This products is the ideal choice for factories, warehouses, and livestock buildings seeking efficient daily air exchange and cooling with minimal installation effort and maximum leak-proof security.

High Airflow with Remarkably Low Noise

Built for high-volume, low-resistance exhaust, this freestanding roof ventilator delivers an impressive 10,000–25,000 m³/h at static pressures up to 30 Pa. Operating at 50–60% total efficiency with 1.5–4.0 kW of power, it moves vast amounts of air quietly and effectively. It utilizes a direct-drive, outdoor-rated motor (2.2–5.5 kW, 380V/50Hz, IP54, F-class, IE3) running at a slow 700–960 r/min to minimize noise, resulting in sound levels below 68 dB(A) at 3 meters. G6.3 balancing keeps vibration under 2.5 mm/s for long-term stability.

Weatherproof, Safe, and Uniquely Practical

The defining advantage of the freestanding roof ventilator is its all-in-one weatherproof design. The streamlined rain cap and base combine to provide Grade 10 wind resistance and IPX4 protection, with a complete sealing system that eliminates roof penetration leaks. It includes standard lightning protection grounding and meets 8-degree seismic design requirements. Perfect for ridge-line installation in poultry houses or similar facilities, this standalone unit provides massive, directed airflow without compromising the roof's waterproof membrane, offering unparalleled convenience and reliability.

Key Performance Parameters

Parameter	Value / Range
Airflow (m³/h)	10,000 – 25,000
Static Pressure (Pa)	0 – 30
Total Efficiency (%)	50 – 60
Motor Power (kW)	2.2 – 5.5
Operating Power (kW)	1.5 – 4.0
Speed (r/min)	~700 – 960
Noise Level @3m (dB(A))	≤68
Protection Rating	IP54
Insulation Class	F
Energy Efficiency Class	IE3
Wind Resistance	Grade 10
Rain Protection	IPX4
Balancing Grade	G6.3
Vibration Velocity (mm/s)	≤2.5