Brightness / Ease Of Use: 5W 685 lumens. Brighter than f8t5cw fluorescent bulbs 12 inch. Easy to put up handy and bright. Instan-on to full brightnes without warm-up phase. Good uniformity of light. Low light attenuation. Assembly / Installation: Plug and play No assembly required. Ease to install. IHYCTV t5 led bulbs 12 inch is suitable as retrofit led replacement for fluorescent tubes with G5 bi-pin bases. No rewiring or circuit modification required. (Please follow all safety instructions.) Correct Fit / Fit-overall / Measurement:Base: G5 Mini bi-pin socket (a pin-to-pin distance of 4.6 mm); Diameter of t5 Bulb:16mm;Length of Bulb: Length (excl. Pin): 288mm / 11.34-inch; Length (incl. Pin): 302mm / 11.89-inch (Based on Measured Data). Quality-Overall / Durability / Strength: Made of optical polycarbonate and heat dissipating aluminium attractive and durable. Can withstand ambient temperatures ranging from -20 to 45 IP40. Adopted Well-Made LED beads. Lifespan: 50000hr. Power Consumption / Efficiency: T5 HF tube light can be fitted as a replacement into luminaires operating on electronic control gear saving on professional electrician costs; and saving 50% on electricity bills thanks to easy installation. Bulb Low Flicker / Color: Flicker-free Gameter eye friendly than fluorescent light bulbs. Non dimming. Light Color: Warm White/ Neutral White/ Daylight White available. SeHelps Support: There is no need to modify the wiring so the danger of cutting the wiring can be avoided. Mercury-free and RoHS-compliant. It doesnt contain any harmful substances and therefore doesnt require special disposal. Protection class: IP40. Silent bulb No buzzing. Areas of application: Households Public buildings Garages Workshops Kitchens Under cabinet lighting etc.