Horiso® Rack Arm System

Whilst Custom Louvers and Retractable Horizontal Louvers are highly effective in solar control on a vertical glazed surface, they are less suitable for horizontal or inclined glazing. The Horiso® Rack Arm System (or skylight louvers), enables effective solar control on unusual glazed surfaces including horizontal and inclined shaped glazing.

Main features

  • The system is flexible in application and can be used both internally and externally at any orientation, slope, angle and any glazing shape.
  • Available in a variety of sizes and shapes including rolled-edged and extruded aluminum slats.
  • Interlocking louvers are available with brushes and perimeter baffles, providing near blackout, or adjusted to allow day-lighting as needed.

Main benefits

  • Highly versatile system - suitable for all types and shapes of glazing including curved surfaces, trapezoids and circles, angled and pitched applications.
  • Can withstand strong winds and moderate snow and ice loads.
  • The system provides precise light control, allowing 110 degrees of rotational control from closed to fully open. This level of light control is perfect for buildings such as museums and galleries that often require specific light conditions.
  • Designed and built to provide years of reliable service with minimal maintenance.
  • A five year warranty applies to all components, including operating mechanisms and controls.


View Rack Arm
Systems gallery

Download brochure
Download product spec sheets
Download CAD drawings