This product is discontinued and the information here is for reference only. For a modern equivalent, view our selection of LED Tubes, here.

Fluorescent light bulbs, commonly referred to as "tubes," come in linear, circular, and u-shaped bulbs that require an external ballast to power. They are ideal for use in offices, warehouses, auditoriums, and other areas that need a large area of light. Because they produce about 75% less heat than incandescent bulbs, they keep indoor areas they light relatively cool compared to high-wattage, traditional lights.

Sylvania's model 21720 light bulb uses 32W of power, with a brightness of 2850LM lumens. It fits a Medium Bi-pin base, and produces a bright daylight colored light. With typical use, it would last about 36000 hours on average before requiring a replacement. It came with a standard manufacturer's warranty, and its UPC was 046135217203.