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4-Pin LED PL Lamp

4-pin LED PL retrofit bulbs replace 4-pin CFL lamps with G24q and GX24q bases. These quad base LED retrofit lamps replace 9 watts to 42 watts CFL bulbs in a standard 4-pin socket. Vertical LED PL lamps can be installed base up or base down, while horizontal LED PL lamps are installed sideways for directional light. Omni-directional PL lamps are also available and can be mounted both ways.