parts with different openings the openings allow the dirt etc to be removed from the lights and pass downward between the slats in one embodiment for example air draft portions may continually be blowing on the lights to blow the debris off the lights fig2 illustrates a first area which is a downdraft stage in this area very intense and fast moving air is sucked down across the lights the downdraft creates a suction of air with a downward pull this may remove loose dust and dirt the downdraft section may blow from above e g from a device attached to the overhead truss 130 and also may suck from below e g using a suction unit 210 high velocity air e g moving between 50 and 100 mph may be used to pull the dirt off of the light in this way fig3 illustrates another section the lights can be located in tubs such as tub 300 the lights may be assembled or disassembled when in the tubs any of the tubs can be pulled off to one of the sides a mount for the lights is shown as 305 and a vice for the lights is shown as 310 the lights may be attached at mount 305 for example and powered for various purposes associated with testing the lights can be powered at the.