Crompton 21W T5 Fluorescent Bulb G5 34 Inch Triphosphor Long Life Light Bulb Lamp (849mm exc Pins, 861mm inc Pins) Ideal as an Under Cabinet and Feature Lighting, Slim Luminaires and Pelmet Lighting Replacement Lamps. These 1900/1750 lumen tube bulbs are ideal for pelmet lighting, Slim luminaires and fixtures and low energy cabinet shelf lighting in the home and for commercial use. T5 Lamps Generally Have the Same Dimensions Across ALL Brands Main Features: T5 Halophosphate bulb 21W Version (849mm exc Pins, 861mm inc Pins) 20,000 Hour Long Life SPECTRA-PLUS Triphosphor Excellent colour rendering and high lumen maintenance Designed for use with High-Frequency ballasts Technical Specification: Watts: 21W Cap: G5/T5 Colour Appearance: White Cool White Daylight White Colour Temperature: 3500°K 4000°K 6400°K Initial lumen output: 1900 1900 1750 Lm Colour rendering/index group: 851B Dimensions: Diameter: 16mm Length Including Pins: 861mm Length Excluding Pins: 849mm Energy Efficiency Rating: A+ Comes with a 20,000 Hour Long Life Guarantee from the Manufacturer Specification Sheet