If it is about illuminating signage and back-lit graphics then LED lights for signs is most common choice. The LED sign tubes are made up of durable plastic and aluminum with having R17 base. It is featured with LEDs on its both sides that provide 360-degree lighting. The optics are used for dispersing lighting that delivers smooth and uniform lighting that eliminates harsh hot spots. It is the perfect energy-efficient replacement for any fluorescent lighting in both parabolic and indirect lighting fixtures.