BALLAST COMPATIBLE T8 4ft led tube 20w 3000 lumens 6500K CLEAR COVER 1pc WORKS WITH OR WITHOUT BALLAST , DOUBLE ENDED POWER .NOTE : This tube is Compatible with MOST of the ballasts , Please note that in the case of ballast incompatibility, a simple bypass of ballast may be required&nbsp;. ETL , CE, ROHS Approved ; one of the BRIGHTEST bulbs on the market . Luminous Flux: 3000 LUMENS ; Color Temperature:6500K Power: 20W(Replace 50W fluorescent tube light) , SPECIAL CONTRACTOR &amp; DISTRIBUTOR PRICING AVAILABLE ; 24/7 Phone Support ; US based Factory Direct Pricing ; 5 years no hassle warranty