These models provide an evenillumination over the whole viewingarea by use of cool white fluorescenttubes mounted below a perspex diffuserand protected by a toughened glassworking surface. The small louvres onall sides ensure natural air flow.Operating voltage 230v AC. • Aluminium construction coated with grey tough epoxy paint.• Perspex diffuser screen mounted below toughened glass.• Louvres on all sides to ensure natural air flow.• Three standard sizes - A4, A3, A2.