Comprises a die-cast metal ventilated lamp house having an open front with extended sides finned externally for heat dissipation and vertical internal grooves to accommodate a slit plate and cylindrical lens. It has a light source comprising 12 volts,24 watts lamp in a holder with two core flexible connecting lead terminating in a pair of 4 mm banana plugs for connecting it to low voltage 12Volts  AC power source. Complete with metal plate having single and triple slits and whitened on one side and other side black matt. Supplied without lens.