24 inches. 1.5 inches diameter. F20 T12. Color Appearance: Warm tone. 3000K. Warm, inviting light that complements any decor. 4 year life (4 year life based on rated life at 6 hours consumer use per day). 1275. Uses 20 watts. Hg- Lamp contain mercury. www.GELighting.com. www.lamprecycle.org. Visit us on the internet: www.GELighting.com. www.lamprecycle.org & 1-800-435-4448. Assembled in USA.