Fulight Easy-Installing &curren; F8T5/CW LED Tube Light - 12" (11-3/4" Actual Length) 1FT 4W (8W Equivalent), Cool White 4000K, Double-End Powered, Frosted Cover- 110/120VAC MUST be directly wired to the 120V AC Power: Disconnect Ballast & Starter if there is any! Installation Manual is attached as the 2nd photo at the left upper corner of this product page! ***DON'T BUY UNLESS YOU UNDERSTAND THIS!*** Actual length 11-3/4" including pins: Replaces bulbs with actual length from 11-5/8" to 11-3/4"! If your bulb is 11-7/8" to full 12", please buy from: http://www.amazon.com/dp/B019MSVQTY Instant-On Cool White 4000K to replace 120V standard 12" F8T5 CFLs Rotatable: light forwarding angle can be adjusted by +-90 degrees to fit any light fixture! GREEN ECO FRIENDLY + SIGNIFICANT ENERGY SAVING + LONG LIFETIME: no flickering, no UV light, no buzzing ballast, no hazardous materials + Saving ~50% electricity + Lifetime&gt;50,000hrs & 3-Year Warranty