Philips InstantFit LED T8 and PL-L Lamps are an ideal energy saving choice for existing fluorescent fixtures. Full light output in spaces with temperatures down to -4°F (-20°C). Perfect for applications with frequent “on/off” switching cycles. Buildings that desire to be mercury free. Instant on, no flicker or buzz. Fits into existing linear fixtures. Optimized performance with instant start ballasts. Compatible with select program start ballasts. Eliminates the need for rewiring and allows the fixture to maintain original UL and CSA compliance.