Rack Arm System

Rack arm systems are a non-retractable shading solution, ideal for skylights. They comprise a series of support arms (rack arms) onto which slats are mounted. The rack arms incorporate a mechanism to enable these slats to be rotated through approximately 100º, from fully open to fully closed.

Rack arms systems offer many benefits, notably:
– They can be installed internally or externally
– They can be used on horizontal or inclined areas of glazing such as skylights, without an independent support structure that would be necessary with aerofoil fins, or the need to retract them in strong winds as would be the case with façade awnings
– They can be designed to fit almost any sh ape of glazing – rectangular, triangular, trapezoidal and circular. The rack arms can also be curved to fit barrel vaulted skylights.
– They provide effective control of both daylight / glare and solar gain
– Some slat types can be perforated to prov ide some outward vision, even in the fully closed position
– The system can be motorized, and a control system can be employed to provide automated solar control
– Systems are supplied in partly assembled form, minimising installation time and costs on site

This type of system is particularly suited to museums and galleries where high levels of light control and sometimes near blackout are required. The system is also used in many other applications however, including glazed atria, skylights in offices, exhibition halls and conference facilities as well as residential conservatories and sun rooms.
The system has been installed in locations where there is a risk of snow and can cope with an imposed load, but it is not appropriate for areas with regular snow fall, where snow remains on the ground for a period in excess of a few days, or where ice is a significant issue

 

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