How old is your uro? It's advisable to keep uros younger than a year old on paper towels. It's also advisable to have a vet do a fecal test for parasites... if your girl has to be treated it will be easier to sanitize if you keep her on paper towels.
UVB florescents will fit in hood style lamps, unless it's a hood lamp for a 10 gallon tank, they don't make UVB florescents that short. Measure the distance between the sockets on the hood fixture and be sure you can get UVB flo's in the right length.
Many uro keepers just use standard fixtures you can buy at the Home Depot. You can put it on top of a hardware cloth screen top, or as you are building a long enclosure you can mount fixtures to the top or side on the inside of the enclosure... that way nothing will get in between your uro and the uvb.
That all said, I switched to mercury vapor bulbs for both UVB & heat. It screws in just like a standard incandescent light bulb, but because of the high heat you have to put it in a 10" dome lamp with a 200 watt ceramic socket.
The Capture the Sun and Powersun bulbs put out more UVB than any UVB flo's. You can also mount them at greater distances than florescent UVBs.
In a 14"Hx36"x24" enclosure with a 1/4" screen top, a 160 watt Powersun kept between 14 to 20 inches off the substrate will achieve the proper air temperature gradient. I raised a stone basking spot 5 inches off the floor to get the basking spot hot enough. The reason I use a lamp stand for a variable height of the lamp is that the base temperature in my apartment can vary wildly between 60 to 90 degrees.
If you do opt for mercury vapor, I advise buying two bulbs online (usually about half the cost than in a store, if you can even find a store that carries them). Powersuns have a one year replacement warranty, which is good, because the bulbs rarely last 3 months. If you have two bulbs you will have a spare on hand when waiting for the first bulb to be replaced under warranty. I don't know if Capture The Sun brand has a warranty, but I have read that they last longer and have even higher UVB output.)
best wishes,
Benedita