Review on IB 116 Ultra Thin Lite Ballast by Kenny Hrdlicka

I wanted this to fit one of the (discontinued) 10 dual 15W 12V fluorescent ceiling lights in my Newmar motorhome. However, they are 1 inch longer than I have room for in the mount. Since I'm six or seven years old, I expect to be replacing most of these over the next few years. I've also tried switching to straight cord LED bulbs but I can't find them anywhere. I would try a different light, but the existing ones require a 22 1/4" x 5 1/4" rectangle to be cut, and most newer LED lights are smaller than the hole so they don't cover it. I'm sure there are hundreds of RV's with the same problem but no one seems to fix it.