Thin-Lite’s LED Specialty VFI lighting fixtures provide efficiency for use in commercial and industrial applications VFI lights are applicable for regrigered trucks and car carriers. They are easy to install when deortaive styling and durability are desired. Clear Acrylic Tube. One Touch dimming switch with unlimited dimming levels, Patented “Memory Set” technology retains user programmed brightness settings. LED life of 100,000 Hrs., Wide Voltage Range Input of 8-30 VDC are standard. Models are offered in either Black or White End-caps. No dimming switch is also available.