Products / Air Curtains / Grand18 / Grand26 Series (3500/4500)


Schwank Grand18/Grand26 Series (3500/4500)

High-efficiency air curtain

The most powerful air curtain in the Schwank product line utilizing EC Motor technology, the Schwank Grand18 / Grand26 Series (3500/4500) easily mounts on doors 12’ up to 26’ feet high. It creates an air seal that keeps conditioned air in the building and dust, dirt, and insects out. Multiple units can be stacked together for larger door widths, and models are available for horizontal or vertical mounting, with heat or ambient.


  • Retail
  • Automotive
  • Food processing
  • Parking garages
  • Manufacturing
  • Warehouses
  • Transportation facilities
  • Cold storage
  • Stadium & sports venues

Schwank Grand18/Grand26 (3500/4500) highlights

High-efficiency air curtain

Schwank air curtains create an effective seal by re-circulating the facility air in a smooth laminar flow across an open doorway. This creates an air seal, like a waterfall, that prevents leakage of air between two areas with different pressure and climate. The more laminar this airflow, the harder it is for outside air, insects, or dust to penetrate the air curtain.


  • Voltages – 230V and 480V
  • Built with EC Motor technology for quiet variable laminar airflow
  • Ambient and Hydronic models available
  • Mounts on doors 12’ to 26’ high
  • Can be mounted to vertical or horizontal applications
  • Multiple units can be stacked together for larger door widths
  • Unit Lengths – 59”, 79”, 88.6”, 98.5”
  • Available in single-phase and three-phase models
  • SchwankAir Plus and SchwankAir Plus Touch smart controls available
Model Discharge width [inch]
3559 59.05
3579  78.74
3599  98.42
4559  59.05
4589  88.58

Control options

Our most powerful air curtain

SchwankAir Plus Controller

  • 0-10V DC
  • Manually set the desired fan speed
  • Automatic On/Off with optional door switch
  • Control multiple units


  • User-friendly touch screen
  • Intelligent software
  • Usage and fault diagnostic data
  • Software updates available
  • Set it and forget it
  • Modbus communication
  • Control multiple units

See all control options for SchwankAir curtains here >


Schwank Grand18/Grand26 Series (3500/4500) resources

Explore product brochures, case studies & technical information.


Click on the image to view and download PDF.

Technical documents

Grand18/Grand26 Series (3500/4500) Series Manual

Grand18 Series (3500) Submittal

CSI Specification

Grand26 Series (4500) Submittal

Grand18/Grand26 Series (3500/4500) Revit

Grand18 Series (3500) Wiring Diagram

Get started

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Get in touch

For general inquiries, please call us toll-free (USA & Canada) 1-877-686-3779 or email our experts. 

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