Will a UVB bulb work in the 'Fluker's 5.5-in Repta-Clamp Lamp with Dimmer?

Yes, as long as the bulb is compatible! The 'Fluker's 5.5-in Repta-Clamp Lamp with Dimmer Switch is UL/CUL approved, has ceramic sockets rated for incandescent bulbs.
It has a polished aluminum anodized reflector for maximum light, UV and heat output. All sizes of the lamp (including the 8.5in) feature safety clamps and easily attach to the rim of all terrariums.
5.5in Rated up to 75watts
8.5in rated up to 150watts