Plug-In CFL Lamps
Compact fluorescent lamps, also known as CFLs, use 75 percent less energy than traditional incandescent bulbs. They also last for approximately 10,000 hours, which is far longer than the typical 750 to 1,000 hours of incandescent lamps. This makes them an ideal upgrade for industrial and other commercial lighting.
These CFL lamps have plug-in pin bases and are intended for use in commercial light fixtures such as lay-in troffers and fluorescent downlights. These types of CFLs require an external ballast. Most consumers are familiar with the screw-in CFL bulbs that you find in retail stores. Those lamps use small built-in ballasts for operation, but these commercial grade CFLs use the ballast in the fixture, which is larger, more durable and longer lasting for heavy duty commercial and industrial use.