Incandescent lamps (General Lighting – R Series), is a specially shaped bulb with particular usage. It has a wide range of residential, clinical or commercial lighting applications. R series incandescent bulb have 3 common shapes, including the most common R80, also known as R25 in US. Also, there are smaller R50 and R63 shapes, which are respectively called R16 and R20 in US. They are made in an extremely wide range of sizes, wattages, and voltages. For smaller bulb shape such as R50, power ranges from 25W to 50W. For larger R bulb shape such as R63 and R80, they have higher power rating which ranges from 25W to 100W. We also have PAR38 bulb with power rating as high as 150W. R series incandescent light bulb can be seen in almost all E12 | E14 | E26 | E27 Edison based, while optional bayonet base such as B15d | B22d are also available.