WAC Lighting JTK-178-WT J Series Line Voltage Track Head in White Finish Die-cast construction with fixed position socket. Lockable vertical aiming For use with 120V track. Track Fixture is available in H, j/j2, and L track configurations. Order according to track layout specifications Smooth and continuous dimming to 10% with a triac dimmer (halogen only) or electronic low Voltage dimmer (LED or halogen) Accepted lamps: a, br, PAR20 (50W max), PAR38 (150W max), LED PAR20, LED PAR30, LED PAR38, LED BR20, and LED BR30. Order lamp separately Accepts 1 lens with the use of a lens clip. Available barn door accessory for glare control. Standards: UL & CUL listed for dry locations Metal construction Fixed position socket Lockable vertical aiming Accepts 1 lens with the use of a lens clip Available barn door accessory (ordered separately)