Ge, f25t8/sp41/eco, 25w, cool white bulb, t8, bulb diameter: 1", mol: 36", lumens: 2080, bi-pin base, rated life: 20,000 hours, cri: 78, color temperature: 4,100 kelvins, eco means low mercury for ease of disposal, also for use with tv #199-627, 36", 25w, t8, basic fluorescent strip light.