4 foot T8 Universal LED Tube - F18T8/841/F/LED - 30K/35K/40K/50K/65K

Retrofit for T8 and T12 fluorescent lamps; these universal lamps are compatible with many instant start electronic ballasts, with the option to bypass the ballast for additional energy savings. Environmentally friendly with no mercury, no lead and no UV. 50,000 hours average rated life. These tubes are highly recommended for use in classrooms, offices, conference rooms and hallways and are suitable for use in enclosed fixtures.