The T8-4FT is an industry-leading 18W LED U-SHAPE Tube (B) replacement lamp producing 120 lumens per watt. (U6)
TYPE A+B , Ballast compatible use with ballast or without ballast, AC 120-277 V.
U-bend light bulbs are tubed-shaped linear bulbs that have been bent into a U shape so they can fit into troffer lights and other fixtures where there is limited space for a bulb. They provide a similar amount of light as comparable linear bulbs and are used in office, commercial, and healthcare facilities. The distance between the sockets on the light fixture should match the distance between the bases on the ends of the bulb.