Air Curtains

Air curtain blowers and design: jet velocity, nozzle height, cross-flow versus centrifugal wheels, and keeping conditioned air where it belongs.

longwell-wi-7073870371-project
By longwell / August 14, 2026 / Engineering Case Studies

1000mm EC Cross Flow Fan: 1600 m³/h Airflow at 80 Pa

Need an EC cross flow fan for tight spaces? We show how a 1000mm unit ...

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AC vs EC fan variants of a cross-flow platform built for one order
By longwell / August 10, 2026 / Engineering Case Studies

We Proposed All-EC. The Customer Was Right to Refuse.

Consolidating on one motor platform would have simplified our producti...

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Split impeller sections and central coupling for a 1200mm cross-flow fan
By longwell / July 27, 2026 / Engineering Case Studies

Twelve Hundred Millimetres of Airflow From Two Pieces

No single impeller extrusion survives 1200mm at speed. The customer ne...

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longwell-wi-6983407863-project
By longwell / May 5, 2026 / Engineering Case Studies

615mm Air Curtain Rotors: Restricting Runout Under 0.7mm

See how we engineered a 615mm cross flow impeller to run at 1600 RPM w...

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longwell-wi-6980887054-project
By longwell / April 29, 2026 / Engineering Case Studies

Integrating a 25 m/s Industrial Air Curtain

Learn why direct-wiring a magnetic door switch to a 3.3 kW industrial ...

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longwell-lwce-100820sn-06-proj
By longwell / April 18, 2026 / Engineering Case Studies

1735 m3/h Air Curtain Spec: EC Cross Flow Fan Engineering

See how we engineered an EC cross flow fan delivering 1735 m³/h at 229...

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longwell-wi-6955886227-project
By longwell / April 13, 2026 / Engineering Case Studies

Air Curtain 45×310 mm Metal Cross Flow Impeller

Learn how we engineered a 45x310 metal cross flow impeller by defining...

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longwell-wi-6948623418-project
By longwell / April 8, 2026 / Engineering Case Studies

Commercial Air Curtain Blower Wheel for Wide Spans

An OEM needed a rigid air curtain blower wheel to span 873 mm. We used...

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longwell-wi-6929310984-project
By longwell / March 27, 2026 / Engineering Case Studies

Air Curtain Rotor: Custom 90mm Cross Flow Impeller

Review our design case study on a custom 90mm cross flow impeller. We ...

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