Sara wrote:

I have a 55 gal. Perfecto aquarium that is 48" long. I'm thinking
about adding a CF strip light but most 48" equipment is not a true 48"
measurement. The strip I am looking at is the All-Glass High Output
Compact Light. Does anyone have this light and what are the
dimensions?

You should be able to find the answer at the All Glass site:
http://www.all-glass.com/