Warm White 3500K 4-Pin GR10q CFL Bulb. 4-Pin GR10q Fitting: Exclusively designed for 4-pin fixtures; not compatible with 2-pin ballasts. Why Choose Our 4-Pin GR10q CFL Bulb?. Experience the perfect blend of energy efficiency and stunning soft lighting with our Warm White 3500K 4-Pin GR10q CFL Bulb.
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