What does all this CF13DD/E/835, PL-C 13W/27/4P, PL-C 26W 4 Pin, CF26DD/E/835 mean?!
Plug-in base CFL bulbs are coded by each manufacturer differently but they
are essentially the same thing with two major differences, wattage and
color temperature. In this category there are three wattages: 13, 18 and 26 (Use Links to filter results) and four color temperatures 2700, 3000, 3500, and 4100 (Use Links to filter results). Plug-in Compact Fluorescents have a non-integrated ballast, which means they
are used in sockets with specific ballasts wired to the leads.