F40 T12 bulb flurescent. Color appearance. Warm, inviting light that complements any decor. 9 year life (9 year life based on rated life at 6 hours consumer use per day). 2900 lumens. 1.5 inches diameter. Uses 40 watts. www.GELightning.com. Visit us on the internet. www.GELightning.com. Assembled in USA.