Where to buy lighting fixture

Im trying to add more CFL lights to my grow system and i cant find where to buy the fixture that can fit 2 or 3 CFL bulbs. Im looking for just the fixture to put the bulbs into not the hood or reflective metal attached to it. Sorry i dont have any better way of explaining it but if anyone knows what fixture im talking about please hit me up.

Thanks

I got mine at home depot. They sell cheap bathroom light fixtures for $5 just take off the "fancy" metal plate and you got a nice rail with 3 light spots

At Lowes they have these for around $2.40

Yep Home Depot or Lowes.. almost any hardware store will have something. even Wal-Mart