4 FT/ 48” T12 Single Pin LED lamp directly relamps and replaces the 39 watt 48” fluorescent bulb F48T12 without rewiring or modification. It's a plug and play product from our "Relamp Series" when switching to LED lighting. Our T12 LED bulb works with traditional magnetic ballasts and modern electronic ballasts in the market, so you can plug it in and quickly enjoy bright lighting. It's fully compatible with Instant Start, Programmed Start, Rapid Start ballasts and magnetic ballasts. Installing the lamp, as easy as changing a bulb: Turn power OFF before installationRemove the existing lampInstall LED T12 TubeSwitch on power General Specifications: Energy saving of 44% from 39 watts to 22 watts with 2420 lumens outputAll plastic diffuser and aluminum construction for better light distribution, less spot reflectionsHeavy duty aluminum heat sink ensures the lamp runs cooler for longerPlastic and aluminum construction ensures less breakageLong life span of > 50,000+ hoursHigh lumen output > 110 lumens per wattAvailable in 2700, 4100, 5000, 6000 KelvinUses 22 watts = 39 watts equivalent2 bulbs per package2420 lumens48-inch T12 (1-1/2-inch diameter)Maximum overall length (M.O.L): Approx. 46.00” with pins (1168.4 mm)Single Pin base type (FA8), pin-type connectorTechnical description: T-12 Single Pin F48T12Perfect for garage, basements, warehouses and industrial buildingsWorks with electronic and magnetic ballast only!Ballast operated lamp, not bypass compatible Equivalent replacement for: F48T12/CWF48T12/WWF48T12/CWF48T12/SP41F48T12/DF48T12/WF48T12/D41F48T12/SPEC41