Mixed Flow Fans
Mixed flow (diagonal) fans combine axial airflow with centrifugal pressure capability, suited to medium-resistance duct runs. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.
Browse by series
Mixed Flow Fans — selection guide
Mixed Flow Fans: 32 models, impellers Ø100–400 mm, maximum airflow 410–7,100 m³/h, static pressure to 168 Pa, AC and EC motors, across 16 series.
Mixed flow (diagonal) duct fans use an impeller between axial and centrifugal geometry: axial-style airflow with a centrifugal pressure component, in an inline casing from Ø100 to Ø400 mm (4 to 16 inch), 410–7,100 m³/h. Each size is offered as an AC pair (LWDA) and an EC pair (LWDE) in 110–120 V and 220–240 V, so the same fan is quoted for 60 Hz and 50 Hz markets. They are the choice for long runs, several bends or fine filters at a given duct size.
How to select from this range
- Choose mixed flow when a standard inline fan of the duct size cannot reach the pressure of the run.
- Select 110–120 V for North America, 220–240 V for Europe and Asia; both versions exist for every size.
- EC (LWDE) adds 0–10 V control for demand-controlled ventilation.
Where these fans are used
- Long residential and office duct runs
- Grow rooms with carbon filters
- Booster duty behind filters
- Workshop extraction
Curves marked “measured” come from our own test rigs per AMCA 210 / ISO 5801 methods; digitised catalogue curves are flagged as such in the selector — see the test labs and certificates. Final selection is confirmed at the duty point and by project validation.
FAQ — Mixed Flow Fans
What sizes are the mixed flow fans?
Ø100, 125, 150, 200, 250, 300, 350 and 400 mm (4–16 inch), each in AC and EC, 110–120 V and 220–240 V — 32 models.
Mixed flow or ultra-silent for a bedroom?
Ultra-silent for the lowest sound level at short runs; mixed flow where the run is long and pressure decides. Both are listed with sound pressure in the data table.