R7S dim-able 15 Watt J Type T3. Very slim designed only 25 mm diameter. The length is 189 mm. The l.e.d. bulb has R7S end caps on each end for each installation. This LED light bulb is comparable to a 140 Watt incadescence light bulb. The led bulb has a long life up to 50,000 hours or longer. Bulb is CE and Rohs listed. The lens is transparent or clear for the most light output. The bulb is made with 144 pieces of 2835 SMD. Each SMD chip outputs around 24 to 26 Lumens. The LED light outputs 1500 Lumens. The led is cool to the touch compared to the incandescent. quartz bulb you are replacing. The CRI>80. The available colors are White 6000 Kelvin and Warm white 3000 Kelvin. This LED light bulb is dim-able using a 120 VAC dimming light switch. Made with poly carbonate and metal materials for a rugged construction.