Gold Stars 4 x T8188301-04 LED 18&rdquo; Replacement Light Tube with T8 base 380 Lumens 12v or 24v Natural White 4 x LED Replacement Tube for 18 light tubes with T8 base 8-30 volts DC including 12v and 24v; the wide-range voltage is designed to withstand RV power fluctuations 60,000 hours life expectancy Low heat, energy efficient, eco-friendly, and instantly bright Comes with easy-to-install instructions