Lighting up stages, studios or retail areas is easy with the 4.5 inch PAR 36 bulb. These bulbs have a flatter base than typical PAR bulbs, allowing them to attach closer to the lighting unit and create a larger light area. They can be used for stage lighting, studio lighting, spot lighting, flood lighting, light displays, truck or tractor lighting, aircraft lighting or serve as emergency lights. The options are endless with this versatile bulb.