Nice adapter. i'm suprised they still make these since CFLs kinds obselete these. I like these much better though. Less waste and i just love that preheat start up. Both of mine came with Sylvania/GTE 2700K lamps.
I recently Found three of these in a box by the dumpster and all of mine work (Although only two lamps made the trip home:()
Mine are from December of 1991 and they work great (I love the preheat startup)
Enjoy your new lamps
Yeah these are kinda bulky and heavy for most table lamps and such. I think these were designed as retrofits for recessed can lights and keylkess lampholders and such.
The nice thing with this style of adapter is the lamp is offset and the socket is ratching, so when using a PL-C "quad" lamp, you can fit the whole thing in quite a number of fixtures. Once I figured that out, I started putting these everywhere & getting rid of my spirals. I've found the 13w PL-C to be brighter than some spiral CFLs of 20 watts!
Mine are from December of 1991 and they work great (I love the preheat startup)
Enjoy your new lamps