Half plastic and half aluminum design with 140 degrees light beam angle . Best thermal conductivity, very long service life. Lifetime: 50000 hrs, A balance between practical lighting and industrial aesthetics Suitable for operation at low temperatures. General lighting in ambient temperatures of -20... 45 °C. Please observe all safety instructions. LED lighting with high illumination capacity. Anti-glare LED replacement for classic fluorescent tube. Retrofit replacement of existing T5 lamps on Electronic ballasts. This item is RoHS compliant and does not contain hazardous substances such as mercury, lead, cadium and chromium IV. Please note that if the ballast fails, it will cause the bulb to not light up. If you have any questions or need any help with your bulb installation, please contact us and we will provide you with technical support and further assistance. DIMENSIONS & WEIGHT Overall Length: 418.00 mm / 16.5-inch Length with base but without base pin: 403.00 mm /15.9-inch Bulb diameter: 16 mm / 0.63-inch Maximum diameter: 16.5 mm / 0.65-inch Product net weight:53.1 g / 1.87-oz Gross weight:115.2 g / 4.06-oz Package dimension:442mm*20mm*20mm CERTIFICATES & STANDARDS Energy consumption: 6.00 kWh/1000h Degree of protection: IP20, Suitable for indoor applications. Standards: CE