Philips Indoor Flood & Landscape Halogen MRI I 20W GU4 Base Set of 4 Set of Four Philips (TM) MR11 Halogen Floodlight Light Bulbs Directional halogen floodlight light bulbs with excellent beam control. Features consistent color performance throughout its lifetime. / Saves energy compared to standard incandescent floodlight light bulbs. Height: 1.6 inches / Width: 1.37 inches 20w / GU4 Base / Brightness: 230 lumens