Project Scope and Radial Exhaust Fan Requirements
On March 30, 2026, LONGWELL opened a project to review specifications for radial exhaust fans based on reference model LWEA200(8″)SP-031. The customer requested technical specifications, static pressure data, and airflow performance curves for two configurations: a 150 m3/h unit with a 6-inch outlet, and an 8-inch outlet model.

Engineering Specification Output
The engineering team evaluated the design parameters and established designated part numbers LWEA100(4″)SP-401 and LWEA150(6″)SP-402. Technical specifications and dimensional drawings were completed on April 2, 2026.
Key engineering specifications established for model LWEA100(4″)SP-401 include:
| Specification Parameter | Value |
|---|---|
| Panel Dimension | 300*300 mm |
| Air Outlet Diameter | 100 mm |
| Voltage | 220 V |
| Frequency | 50 Hz |
| Speed | 1250 RPM |
| Power | 36 W |
Evaluate Similar Fan Specifications
To evaluate custom radial or axial exhaust fan specifications for your ventilation system, please share your duty point requirements, operating voltage, physical mounting envelope, and desired duct connection diameters with our team through the contact page or explore standard fan models on the LONGWELL fan selection portal.
Choose the right exhaust fan
Longwell manufactures 241 exhaust fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.









