Flourescent light tube size

[beardedone]

I am going to the US for a solo trip. I need to know the size of flourescent tubes in our 09 Landmark but the trailer is out at the campground. Any ideas as I need to buy a replacement for one, or is it cheaper to replace the fixture.

 

[danemayer]

If you have the 22" fixtures, they likely have 18" T8 15 Watt bulbs that you can buy in Walmart or Home Depot for way less than the cost of a new fixture. Amazon has "full spectrum" T8s for $6.14. "Full Spectrum" simulates sunlight.