The diameter of the tube is described in eighths of an inch as it is for incandescent lamps so a fluorescent lamp 1 inch in diameter eight eighths is a t8.
Fluorescent lamp sizes chart.
Learn about all the different types of light bulbs including led halogen fluorescent and more.
When you are trying to replace fluorescent lighting whether with leds or another tube you will need to understand the difference between tube light sizes.
Find the lightbulbs shape you re looking for with this visual chart detailed illustrations of bulb shapes include a19 mr16 par and linear fluorescent tubes.
Lamps are typically identified by a code such as fxxty where f is for fluorescent the first number xx indicates either the power in watts or length in inches the t indicates that the shape of the bulb is tubular and the last number y is the diameter in eighths of an inch sometimes in millimeters rounded up to the nearest millimeter.
Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types.
Determining the tube size of the fluorescent light will help you decide which tube lighting is a suitable replacement.
Sizes range from t2 to t17.